People v. LeFlore , 32 N.E.3d 1043 ( 2015 )


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  •                                       
    2015 IL 116799
    IN THE
    SUPREME COURT
    OF
    THE STATE OF ILLINOIS
    (Docket No. 116799)
    THE PEOPLE OF THE STATE OF ILLINOIS, Appellant, v.
    KEITH LeFLORE, Appellee.
    Opinion filed May 21, 2015.
    JUSTICE THOMAS delivered the judgment of the court, with opinion.
    Chief Justice Garman and Justices Kilbride and Karmeier concurred in the
    judgment and opinion.
    Justice Burke dissented, with opinion, joined by Justices Freeman and Theis.
    OPINION
    ¶1        Defendant, Keith LeFlore, was charged with aggravated robbery, robbery and
    burglary in connection with an April 24, 2009, robbery of a gas station in Aurora,
    Illinois. Defendant filed a pretrial motion to quash arrest and suppress evidence,
    arguing that police improperly used a Global Positioning System (GPS) device
    without a warrant to track the movements of a vehicle he used. The trial court
    denied the motion. Following a jury trial, defendant was convicted of all charges,
    and sentenced to 20 years in prison on the aggravated robbery charge. The appellate
    court reversed and remanded. We allowed the State’s petition for leave to appeal.
    Ill. S. Ct. R. 315 (eff. July 1, 2013).
    ¶2                                    BACKGROUND
    ¶3        In April 2009, Aurora police received a tip from the Crime Stoppers hotline that
    defendant was committing burglaries on the west side of Aurora and bringing
    “various items” into his apartment complex. The police located defendant’s address
    at the apartment complex after a data search. Police also discovered that defendant
    was on mandatory supervised release from prison. They also knew that in a recent
    police encounter defendant had been arrested for fleeing in a red Kia Spectra with
    license plate X743***. The Kia was registered to Stephanie Powell, who lived at
    the same address as defendant.
    ¶4       On April 23, 2009, Aurora police detective Jeremy Shufelt placed a GPS device
    under the rear bumper of the Kia while it was parked at the apartment complex
    where defendant resided. Detective Shufelt did not obtain a warrant to place the
    GPS device on the car’s exterior. Early the next morning, a local gas station located
    a few minutes from defendant’s residence was held up. Tracking from the GPS
    device showed that the Kia was parked near the gas station at the time it was robbed
    around 4:40 a.m.
    ¶5       A surveillance camera captured the robbery on video. It showed that the robber
    used what looked like a shotgun. He took the cash drawer and a carton of Newport
    cigarettes from the cashier and fled. The video also showed that the robber was
    wearing a pair of Steve Madden athletic shoes, which have a distinctive striping
    pattern on them.
    ¶6       On the evening of the same day as the robbery, police conducted a parole search
    of defendant’s residence. Defendant arrived at the apartment complex driving the
    Kia at the same time the police were conducting their search of his residence.
    Defendant was taken into custody for driving with a revoked license. He was
    wearing Steve Madden athletic shoes. During the search, the police recovered a
    hollow metal cane that had the rubber tip removed from the end.
    ¶7       When defendant was interviewed, the police told him that he had been under
    surveillance, but they did not tell him about the use of the GPS device. The police
    also told him that the apartment complex’s video camera showed him leaving early
    in the morning. After the police placed the metal cane in the interview room,
    defendant confessed, explaining that he made the cane look like a gun by removing
    the rubber stopper at the end and placing a black grocery-type bag around the
    center. The cashier from the store later picked defendant out of a photo lineup.
    -2-
    ¶8         Defendant was eventually charged with aggravated robbery, robbery and
    burglary in the circuit court of Kane County. Defendant filed a motion to quash his
    arrest and suppress evidence, arguing that it was solely through information
    received through the GPS tracking device that defendant became a suspect in the
    robbery and therefore all the evidence against him should be suppressed. The trial
    court denied the motion, finding that the use and “the existence” of the GPS device,
    which did not interfere with defendant’s possessory interest in the vehicle, did not
    constitute a search under either the federal or state constitutions. Relying upon
    United States v. Knotts, 
    460 U.S. 276
    (1983), United States v. Karo, 
    468 U.S. 705
           (1984), and United States v. Garcia, 
    474 F.3d 994
    (7th Cir. 2007), as controlling
    authority, the court concluded that the fourth amendment was not violated because
    “the information secured by the police was equal to what personal surveillance
    would have revealed and [was] available from the observations that could have
    been made on or about the public way or the publicly accessible locations.”
    ¶9         Defendant represented himself at his trial and the jury found him guilty of all
    charges. The trial court entered judgment on the aggravated battery charge and
    sentenced defendant to 20 years in prison. On appeal, defendant argued that the trial
    court erred in denying his motion to quash arrest and suppress evidence, and that
    the court erroneously allowed him to waive counsel without properly admonishing
    him under Illinois Supreme Court Rule 401(a) (eff. July 1, 1984).
    ¶ 10       While this case was pending on appeal in the appellate court, the United States
    Supreme Court decided United States v. Jones, 565 U.S. ___, ___, 
    132 S. Ct. 945
    ,
    948-49 (2012), which held that the attachment of a GPS tracking device and the
    subsequent use of the device to monitor a vehicle’s movements on public streets
    was a search under the fourth amendment because the placement of the device
    constituted an unlawful trespass. Also while this case was pending on appeal, the
    Supreme Court decided Davis v. United States, 564 U.S. ___, 
    131 S. Ct. 2419
           (2011). In Davis, the Court applied the good-faith exception to the exclusionary
    rule to an automobile search conducted by a state police officer “in objectively
    reasonable reliance on binding judicial precedent.” Id. at ___, 131 S. Ct. at
    2428-29.
    ¶ 11       Prior to the oral argument before the appellate court in the present case, the
    State submitted Jones as additional authority. 
    2013 IL App (2d) 100659
    , ¶ 83
    (Birkett, J., concurring in part and dissenting in part). The parties were then
    directed to address Davis and whether the good-faith exception applied. 
    Id. At oral
                                                   -3-
    argument, the State argued that Knotts and Karo were “binding precedent” at the
    time the search was conducted, and defendant argued that those two cases were
    distinguishable because they involved “beeper” tracking devices and not the more
    advanced GPS technology used here. 
    Id. ¶ 108.
    ¶ 12        A divided appellate court reversed defendant’s conviction based on Jones and
    remanded for further proceedings to determine whether defendant borrowed the
    vehicle with Powell’s consent so as to establish standing under Jones. 
    Id. ¶ 29
           (majority opinion). The appellate court majority accepted defendant’s argument
    that the good-faith exception to the exclusionary rule was not applicable due to the
    more advanced nature of GPS tracking. 
    Id. ¶¶ 44-45.
    However, Justice Birkett in
    his partial dissent determined, among other things, that the good-faith exception
    applied and that the evidence that resulted from the GPS tracking should not be
    excluded. He concluded that the trial court correctly ruled that Knotts and Karo
    were “binding precedent” that controlled the outcome at the time the search was
    conducted in April 2009. 
    Id. ¶ 115
    (Birkett, J., concurring in part and dissenting in
    part). Finally, the appellate court was in unanimous agreement that the defendant’s
    convictions must be reversed and the cause remanded for a new trial based on the
    trial court’s failure to properly admonish defendant pursuant to Supreme Court
    Rule 401(a) (Ill. S. Ct. R. 401(a) (eff. July 1, 1984). 
    2013 IL App (2d) 100659
    , ¶ 60.
    ¶ 13       We allowed the State’s petition for leave to appeal. Ill. S. Ct. R. 315 (eff. July 1,
    2013). Before this court, the State concedes that the appellate court correctly
    determined that defendant must be retried based on the lack of proper
    admonishments under Supreme Court Rule 401(a). The State contends, however,
    that upon remand for a new trial, there is no need for the trial court to hold a new
    suppression hearing. In that regard, three issues are raised before this court: (1)
    whether the fourth amendment permitted police to place a GPS device on a car
    associated with defendant, where defendant was on mandatory supervised release
    from prison at the time and thus had a diminished expectation of privacy from that
    of an ordinary citizen; (2) whether defendant is entitled to a remand to present new
    evidence to establish his interest in the Kia so that he can avail himself of the
    holding in Jones; and (3) whether the good-faith exception to the exclusionary rule
    is applicable under the circumstances of this case so that the evidence compiled
    against defendant as a result of the installation and use of the GPS device should not
    be excluded. For the reasons that follow, we find that the good-faith exception to
    the exclusionary rule is applicable and that a new suppression hearing is therefore
    -4-
    not warranted. Because this issue is dispositive, we find it unnecessary to address
    the two other issues raised by the parties.
    ¶ 14                                       ANALYSIS
    ¶ 15      The fourth amendment to the United States Constitution provides that:
    “[t]he right of the people to be secure in their persons, houses, papers, and
    effects, against unreasonable searches and seizures, shall not be violated, and
    no Warrants shall issue, but upon probable cause, supported by Oath or
    affirmation, and particularly describing the place to be searched, and the
    persons or things to be seized.” U.S. Const., amend. IV.
    ¶ 16      In a similar fashion, the Illinois Constitution provides that:
    “[t]he people shall have the right to be secure in their persons, houses,
    papers and other possessions against unreasonable searches, seizures, invasions
    of privacy or interceptions of communications by eavesdropping devices or
    other means. No warrant shall issue without probable cause, supported by
    affidavit particularly describing the place to be searched and the persons or
    things to be seized.” Ill. Const. 1970, art. I, § 6.
    This court interprets the search and seizure clause of the Illinois Constitution in
    “limited lockstep” with its federal counterpart. People v. Caballes, 
    221 Ill. 2d 282
    ,
    314 (2006).
    ¶ 17       Searches conducted without a warrant are per se unreasonable under the fourth
    amendment subject only to a few exceptions. Katz v. United States, 
    389 U.S. 347
    ,
    357 (1967). The Supreme Court created the exclusionary rule as a general deterrent
    to future fourth amendment violations. Arizona v. Evans, 
    514 U.S. 1
    , 10 (1995).
    Despite the exclusionary rule’s relationship to the fourth amendment, however,
    there is no constitutional right to have the fruits of an illegal search or seizure
    suppressed at trial. United States v. Katzin, 
    769 F.3d 163
    , 170 (3d Cir. 2014)
    (en banc) (noting that the fourth amendment “ ‘says nothing about suppressing
    evidence in violation of [its] command’ ” (citing Davis, 564 U.S. at ___, 131 S. Ct.
    at 2426)). The judicially created doctrine of exclusion at times suppresses the
    evidence and makes it unavailable for trial. However, even when a fourth
    amendment violation has occurred, the evidence that resulted will not be
    -5-
    suppressed when the good-faith exception to the exclusionary rule applies. 
    Katzin, 769 F.3d at 169-70
    .
    ¶ 18       In the present case, we need not determine whether Aurora police conducted an
    unreasonable search in violation of Jones. Nor do we need to remand for further
    proceedings to determine whether defendant had a sufficient possessory interest in
    the Kia to avail himself of the holding in Jones. This is because even assuming that
    the search violated the fourth amendment, the good-faith exception is applicable
    and suppression is not warranted.
    ¶ 19        Defendant seeks to avoid that result by arguing that Aurora police do not fall
    under the good-faith exception as explained in Davis because Knotts and Karo are
    distinguishable cases that the officers could not have reasonably relied upon.
    Defendant argues that both cases are distinguishable because they involved beeper
    tracking and not GPS technology and did not involve a trespass of the device unto
    the vehicle’s exterior without the consent of the owner. Defendant also argues that
    police could not have reasonably relied upon Garcia, a Seventh Circuit Court of
    Appeals case directly on point, because that case “is not binding precedent on
    Illinois courts.” In defendant’s view, binding precedent only exists if it is from the
    same jurisdiction in which the case is prosecuted, is followed by police to the
    “letter,” and is on all fours with the case to be decided.
    ¶ 20       As we will explain more fully below, defendant’s reading of Davis is incorrect
    and too narrow. Acceptance of the narrow interpretation of Davis proposed by
    defendant would mean neglecting or ignoring the important principles that have
    been set forth by the Supreme Court to help determine whether the good-faith
    exception to the exclusionary rule should apply in any given case. We also note at
    the outset that all of the federal circuits that have considered post-Jones whether the
    good-faith exception applies in cases of warrantless GPS searches conducted
    pre-Jones have rejected a narrow reading of Davis and have instead concluded that
    the good-faith exception applies under circumstances identical to the present case.
    E.g., United States v. Katzin, 
    769 F.3d 163
    (3d Cir. 2014) (en banc) (although the
    facts of Knotts and Karo differ from Jones, it is the rationale that underpins those
    decisions that is considered binding appellate precedent and that it was objectively
    reasonable for the officers to rely upon the precedent under Davis); United States v.
    Stephens, 
    764 F.3d 327
    , 338 (4th Cir. 2014) (“[w]ithout the benefit of hindsight ***
    and with no contrary guidance from the Supreme Court or this Court, *** a
    reasonably well-trained officer in this Circuit could have relied on Knotts as
    -6-
    permitting the type of warrantless GPS usage in this case”); United States v. Brown,
    
    744 F.3d 474
    , 478 (7th Cir. 2014) (rehearing and rehearing en banc denied)
    (observing that “all of the extant appellate precedent is on the side of applying
    Davis” and its good-faith exception to “all pre-Jones GPS tracking,” even when
    installation was nonconsensual and without a warrant (emphasis in original));
    United States v. Aguiar, 
    737 F.3d 251
    , 261 (2d Cir. 2013) (found that at the time
    police placed the GPS tracking device on the defendant’s car in 2009, law
    enforcement could reasonably rely upon the binding appellate precedent of Knotts
    and Karo); United States v. Sparks, 
    711 F.3d 58
    , 65 (1st Cir. 2013) (noting that
    even though the circuit had not addressed warrantless GPS tracking prior to Jones,
    the Supreme Court’s decision in Knotts was “sufficiently clear and apposite” to
    trigger Davis’s good-faith exception); see also Kelly v. State, 
    82 A.2d 205
    , 214
    (Md. 2013) (the state’s highest court determined that Knotts was sufficient binding
    appellate precedent in Maryland to authorize GPS tracking at the time officers
    installed the device to the defendant’s vehicle pre-Jones).
    ¶ 21                  I. Exclusionary Rule and the Good-Faith Exception
    ¶ 22       We turn now to the guiding principles that should govern any analysis as to the
    applicability of the exclusionary rule or its good-faith exception. There is no
    constitutional right to have the evidence resulting from an illegal search or seizure
    suppressed at trial. 
    Katzin, 769 F.3d at 170
    (quoting Davis, 564 U.S. at ___, 131 S.
    Ct. at 2426). The mere fact of a fourth amendment violation does not mean that
    exclusion necessarily follows. 
    Id. Instead, application
    of the exclusionary rule has
    been restricted to those “unusual cases” where it can achieve its sole objective: to
    deter future fourth amendment violations. 
    Id. (citing United
    States v. Leon, 
    468 U.S. 897
    , 909 (1984)). The Supreme Court has repeatedly expressed the notion that
    “exclusion ‘has always been our last resort, not our first impulse.’ ” Herring v.
    United States, 
    555 U.S. 135
    , 140 (2009).
    ¶ 23       In order for exclusion of the evidence to apply, the deterrent benefit of
    suppression must outweigh the “substantial social costs.” 
    Leon, 468 U.S. at 907
    .
    “ ‘Exclusion exacts a heavy toll on both the judicial system and society at large,’
    because it ‘almost always requires courts to ignore reliable, trustworthy evidence
    bearing on guilt or innocence,’ and ‘its bottom-line effect, in many cases, is to
    suppress the truth and set the criminal loose in the community without
    -7-
    punishment.’ ” 
    Stephens, 764 F.3d at 335
    (quoting Davis, 564 U.S. at ___, 131 S.
    Ct. at 2427). “As this result conflicts with the ‘truth-finding functions of judge and
    jury,’ United States v. Payner, 
    447 U.S. 727
    , 734 *** (1980), exclusion is a ‘bitter
    pill,’ 
    Davis, 131 S. Ct. at 2427
    , swallowed only as a ‘last resort,’ 
    Hudson, 547 U.S. at 591
    , 
    126 S. Ct. 2159
    .” 
    Katzin, 769 F.3d at 171
    . In order for the exclusionary rule
    to be appropriate then, the deterrent benefits must outweigh its heavy costs. Davis,
    564 U.S. at ___, 131 S. Ct. at 2427.
    ¶ 24       Where the particular circumstances of a case show that police acted with an
    “ ‘objectively “reasonable good-faith belief” that their conduct [was] lawful,’ ” or
    when their conduct involved only simple, isolated negligence, there is no illicit
    conduct to deter. 
    Katzin, 769 F.3d at 171
    (quoting Davis, 564 U.S. at ___, 131 S.
    Ct. at 2427-28, quoting 
    Leon, 468 U.S. at 909
    ). In such a case, “ ‘the deterrence
    rationale loses much of its force and exclusion cannot pay its way.’ ” (Internal
    quotation marks omitted.) 
    Id. (quoting Davis,
    564 U.S. at ___, 131 S. Ct. at 2428,
    quoting 
    Leon, 468 U.S. at 907
    n.6, 919). Thus, exclusion is invoked only where
    police conduct is both “sufficiently deliberate” that deterrence is effective and
    “sufficiently culpable” that deterrence outweighs the cost of suppression. 
    Herring, 555 U.S. at 144
    ; 
    Katzin, 769 F.3d at 171
    .
    ¶ 25       The “pertinent analysis of deterrence and culpability is objective, not an inquiry
    into the subjective awareness of arresting officers.” (Internal quotation marks
    omitted.) 
    Herring, 555 U.S. at 145
    . Thus, in determining whether the good-faith
    exception applies, a court must ask “the objectively ascertainable question whether
    a reasonably well trained officer would have known that the search was illegal in
    light of all of the circumstances.” (Internal quotation marks omitted.) 
    Id. (quoting Leon,
    468 U.S. at 922 n.23).
    ¶ 26          II. Davis’s Application to the Specific Circumstances Before It
    ¶ 27       In Davis, the Supreme Court applied the good-faith exception in one specific
    instance: to an automobile search following an arrest conducted by a local
    Greenville, Alabama, city police officer investigating a state DUI offense. The
    question for the Court was whether the officer could have reasonably relied upon an
    Eleventh Circuit Court of Appeals precedent as authority for his conduct in
    deciding to search the vehicle. In that case, police found in the course of their
    search a handgun in defendant’s jacket left inside the vehicle, and defendant was
    -8-
    subsequently prosecuted for a firearm charge in federal court. Davis held that
    “searches conducted in objectively reasonable reliance on binding appellate
    precedent are not subject to the exclusionary rule.” Davis, 564 U.S. at ___, 131 S.
    Ct. at 2423-24. The Court explained that “[a]n officer who conducts a search in
    reasonable reliance on binding appellate precedent does no more than ac[t] as a
    reasonable officer would and should act under the circumstances. [Citation.] The
    deterrent effect of exclusion in such a case can only be to discourage the officer
    from do[ing] his duty.” (Internal quotation marks omitted.) Id. at ___, 131 S. Ct. at
    2429. Of paramount importance to the Court’s holding was the lack of police
    culpability:
    “Under our exclusionary-rule precedents, [the] acknowledged absence of
    police culpability dooms Davis’s claim. Police practices trigger the harsh
    sanction of exclusion only when they are deliberate enough to yield
    ‘meaningfu[l]’ deterrence, and culpable enough to be ‘worth the price paid by
    the justice system.’ [Citation.] The conduct of the officers here was neither of
    these things. The officers who conducted the search did not violate Davis’s ***
    rights deliberately, recklessly, or with gross negligence. [Citation.] Nor does
    this case involve any ‘recurring or systemic negligence’ on the part of law
    enforcement. [Citation.] The police acted in strict compliance with binding
    precedent, and their behavior was not wrongful. Unless the exclusionary rule is
    to become a strict-liability regimen, it can have no application in this case.
    ¶ 28      Indeed, in 27 years of practice under Leon’s good-faith exception, we have
    ‘never applied’ the exclusionary rule to suppress evidence obtained as a result of
    nonculpable, innocent police conduct.” Id. at ___, 131 S. Ct. at 2428-29.
    ¶ 29       Thus, if it can be said in the present case that “binding appellate precedent”
    existed on April 23, 2009, allowing for warrantless GPS use when Detective
    Shufelt installed the device, then Davis controls without a doubt and the
    exclusionary rule does not apply. However, even if it could be concluded that
    “binding appellate precedent” did not exist in this case, it would not end the
    inquiry. It would still be necessary to conduct the “good-faith inquiry” and consider
    “whether a reasonably well trained officer would have known that the search was
    illegal in light of all of the circumstances.” (Internal quotation marks omitted.)
    
    Herring, 555 U.S. at 145
    . Clearly, application of the good-faith inquiry is not
    limited to the specific circumstances addressed by the Supreme Court in Davis or
    any other Supreme Court case. 
    Stephens, 764 F.3d at 336
    . The Supreme Court has
    -9-
    found the exclusionary rule to be inapplicable in a variety of settings after
    undertaking the good-faith analysis, and the fact that a court might apply the
    good-faith exception in a new context not yet addressed by the Supreme Court does
    not mean that it is creating a “new, freestanding exception” to the exclusionary rule.
    
    Id. at 336
    n.10; see also Davis, 564 U.S. at ___, 131 S. Ct. at 2428 (noting that
    “[t]he Court has over time applied this ‘good-faith’ exception across a range of
    cases”).
    ¶ 30              III. Exclusionary Rule Does Not Apply for Three Reasons
    ¶ 31       We find that application of the exclusionary rule to this case is not appropriate
    for three reasons. First, the exclusionary rule does not apply because at the time of
    Detective Shufelt’s conduct in April 2009, the United States Supreme Court’s
    decisions in Knotts and Karo were “binding appellate precedent” that he could have
    reasonably relied upon. Second, we find in the alternative that, pursuant to the
    Supreme Court’s general good-faith analysis, the police conduct in relying on the
    legal landscape that existed at the time was objectively reasonable and a reasonable
    officer had no reason to suspect that his conduct was wrongful under the
    circumstances. And third, this case fits squarely within the specific holding of
    Davis, because United States v. Garcia, 
    474 F.3d 994
    , 996-97 (7th Cir. 2007), was
    binding precedent as far as the Aurora police detective was concerned and he stood
    in exactly the same shoes as the Alabama police officer in Davis that relied upon
    binding Eleventh Circuit Court of Appeals precedent when he conducted a search
    in the course of investigating a state law traffic offense. Accordingly, suppression
    of the evidence is not warranted for each of these reasons.
    ¶ 32              IV. Knotts and Karo Were Binding Appellate Precedent
    ¶ 33       There is no question that decisions of the United States Supreme Court
    interpreting fourth amendment law are binding precedent for Illinois police officers
    and Illinois courts. We conclude that the Supreme Court cases of Knotts and Karo
    clearly authorized the police conduct in this case. Even though the underlying facts
    of those cases differ from the facts of the present case, it is the rationale that
    underlies those cases that is relevant to our discussion. See 
    Katzin, 769 F.3d at 173-74
    ; 
    Stephens, 764 F.3d at 337-38
    .
    - 10 -
    ¶ 34       In Knotts, the police were investigating suspects relative to a conspiracy to
    manufacture illegal drugs. 
    Knotts, 460 U.S. at 278
    . The police arranged for one of
    the suspects to voluntarily take into his vehicle a container of chloroform that,
    unbeknownst to the suspect, contained a beeper. By tracking the signals emitted
    from the beeper, police were able to locate it at defendant’s secluded manufacturing
    site. The defendant sought to suppress the evidence that was obtained as a result of
    the warrantless monitoring of the beeper. The Supreme Court held that the use of
    the beeper to track a vehicle was not a search under the fourth amendment. 
    Id. at 285.
    The Court explained that “[a] person traveling in an automobile on public
    thoroughfares has no reasonable expectation of privacy in his movements from one
    place to another,” and the beeper simply revealed what could have been seen by the
    public through visual surveillance and it made no difference that the officers
    “sensory faculties” were augmented by its use. 
    Id. at 281,
    282.
    ¶ 35       In Karo, the defendant ordered 50 gallons of ether (for use in cocaine
    smuggling) from an informant. 
    Karo, 468 U.S. at 708
    . After obtaining the
    informant’s consent, federal agents substituted one of the informant’s cans of ether
    with its own can, which contained a beeper. Defendant bought the can and took it
    into his car. For the next several months, the agents monitored the beeper to
    determine the location of the ether. One of the questions presented before the
    Supreme Court was whether the warrantless installation of the beeper was legal. 
    Id. at 711.
    ¶ 36       The Court in Karo concluded that the warrantless installation of the beeper did
    not violate the fourth amendment. 
    Id. at 713.
    The Court found that the transfer of
    the can with the beeper did not convey any information, and although there was a
    potential that the defendant’s privacy could be invaded, the transfer itself infringed
    no privacy interest. 
    Id. at 712.
    Moreover, the Court found that the transfer was not a
    seizure despite the “technical trespass on the space occupied by the beeper,” which
    the Court referred to as “unknown and unwanted foreign object.” 
    Id. The Court
           then proceeded to “broadly discredit[ ] the relevance of trespass in the context of
    electronic surveillance of vehicles: ‘[A] physical trespass is only marginally
    relevant to the question of whether the Fourth Amendment has been violated, ... for
    an actual trespass is neither necessary nor sufficient to establish a constitutional
    violation.’ ” 
    Katzin, 769 F.3d at 175
    (quoting 
    Karo, 468 U.S. at 712-13
    ); see also
    
    Aguiar, 737 F.3d at 261
    (also noting that Karo discounted the importance of
    trespass in placing a tracking device).
    - 11 -
    ¶ 37       As the Court of Appeals, Second Circuit, explained in Aguiar:
    “Karo’s de minimis treatment of the trespass issue gave no indication that the
    issue of trespass would become the touchstone for the analysis in Jones.
    Moreover, Karo’s brushing off of the potential trespass fits logically with
    earlier Supreme Court decisions concluding that ‘the physical characteristics of
    an automobile and its use result in a lessened expectation of privacy therein.’ ”
    
    Aguiar, 737 F.3d at 261
    (quoting New York v. Class, 
    475 U.S. 106
    , 112 (1986)
    (to examine the exterior of an automobile does not constitute a search)); see
    also Cardwell v. Lewis, 
    417 U.S. 583
    , 591 (1974) (plurality opinion)
    (warrantless taking of paint scrapings from the exterior of a vehicle does not
    constitute an unlawful search). 1
    ¶ 38       We conclude that it was objectively reasonable for the police to rely upon
    Knotts and Karo for the conclusion that warrantless installation and monitoring of
    the GPS device was legal. We acknowledge that the facts are different here, but
    again it was reasonable for Detective Shufelt to rely upon the legal principles set
    forth by the Supreme Court. Here, police monitored the movement of the Kia by
    GPS not by a beeper signal. But there is no legally significant difference between
    the two technologies, and in both cases the devices were “unknown and unwanted
    objects.” Moreover, the police surreptitiously affixed a GPS device to the underside
    of the Kia’s bumper rather than surreptitiously “tricking him into unwittingly
    taking the GPS device into his vehicle,” but otherwise the conduct of law
    enforcement here “echoed that in Knotts and Karo.” 
    Katzin, 769 F.3d at 176
    . Just
    like in Karo, the attachment of the GPS device did not itself convey any
    information or infringe any privacy interest apart from its use.
    ¶ 39       We fully agree with the conclusion reached by the United States Court of
    Appeals, Third Circuit, in its en banc decision in Katzin in considering the same
    issue under the identical facts presented here: “It would have been objectively
    reasonable for a law enforcement officer to conclude that Karo’s sweeping
    rejection of the trespass theory applied not only to the [federal] agents’ elaborate
    ruse therein, but also to the unremarkable strategy of magnetically attaching a
    battery-operated GPS unit onto the exterior of a vehicle. In sum *** the Supreme
    1
    It must be recognized that there would have been no merit to any argument raised before Jones
    that a physical trespass to private property, standing alone, would constitute a search. See, e.g.,
    Florida v. Riley, 
    488 U.S. 445
    , 459 n.3 (1989) (noting that Katz v. United States, 
    389 U.S. 347
    , 351
    (1967), “made plain that the question whether or not the disputed evidence had been procured by
    means of a trespass was irrelevant”).
    - 12 -
    Court’s rationale was broad enough to embrace the agents’ conduct, and their
    reliance on this binding appellate precedent was objectively reasonable under
    Davis.” 
    Katzin, 769 F.3d at 175
    .
    ¶ 40   V. Conclusion That Knotts and Karo Are Binding Precedent for Pre-Jones GPS
    Searches Is Supported by All of the Federal Court of Appeals Decisions to Address
    the Issue
    ¶ 41       In the aftermath of Jones, all of the federal circuit court of appeals decisions to
    directly consider whether Knotts and/or Karo are binding appellate precedent under
    Davis—so that evidence obtained through warrantless GPS installation and use
    pre-Jones should not be excluded—have answered the question in the affirmative
    and have applied the good-faith exception. See United States v. Katzin, 
    769 F.3d 163
    , 173-75 (3d Cir. 2014); United States v. Stephens, 
    764 F.3d 327
    , 338 (4th Cir.
    2014); United States v. Aguiar, 
    737 F.3d 251
    , 261-62 (2d Cir. 2013); see also
    United States v. Brown, 
    744 F.3d 474
    , 478 (7th Cir. 2014) (finding Knotts and Karo
    are binding appellate precedent for purposes of consensual GPS installation and
    subsequent monitoring; and stating that “all of the extant appellate precedent is on
    the side of applying Davis[’s]” good-faith exception to all nonconsensual searches
    conducted pre-Jones as well, and doubting the deterrent benefit of prohibiting
    police from relying on out-of-circuit authority just because a particular circuit lacks
    its own authority); United States v. Sparks, 
    711 F.3d 58
    , 65, 67 (1st Cir. 2013). 2
    Thus, the First, Second, Third and Fourth Circuits all clearly hold that Knotts
    and/or Karo are binding appellate precedent for purposes of Davis. Additionally,
    many of the other circuits will likely not have much opportunity to address this
    precise point because they already had decided cases before Jones was decided,
    holding that warrantless attachment and use of a GPS device on a suspect’s vehicle
    was acceptable under Knotts and/or Karo. Consequently, there would be no need to
    consider Knotts and Karo specifically as supporting application of the good-faith
    exception where their own circuit precedent had already existed. See, e.g., United
    States v. Hernandez, 
    647 F.3d 216
    , 220-21 (5th Cir. 2011) (relying on Knotts and
    its own prior precedent on beepers to hold that warrantless GPS attachment and
    2
    Sparks also relied upon its own pre-Jones precedent in United States v. Moore, 
    562 F.2d 106
           (1st Cir. 1977), a case decided years before Knotts. Sparks did not delineate where its reliance on
    Knotts ended and its reliance on Moore began, but Sparks relied upon Knotts as binding appellate
    precedent for the same reasons we do. See 
    Sparks, 711 F.3d at 65-67
    .
    - 13 -
    monitoring was not a search in a case decided before Jones); United States v.
    Garcia, 
    474 F.3d 994
    , 996-97 (7th Cir. 2007) (same holding that warrantless GPS
    installation and use was not a search); United States v. Marquez, 
    605 F.3d 604
    , 610
    (8th Cir. 2010) (GPS installation and use requires only reasonable suspicion, not a
    warrant); United States v. Pineda-Moreno, 
    591 F.3d 1212
    , 1215-17 (9th Cir. 2010)
    (GPS installation and use is not a search); United States v. McIver, 
    186 F.3d 1119
    ,
    1126-27 (9th Cir. 1999) (holding that GPS installation was not a search); United
    States v. Smith, 387 F. App’x 918, 921 (11th Cir. 2010) (per curiam) (installation of
    a GPS device did not violate the fourth amendment because the defendant had no
    reasonable expectation of privacy in the exterior of his vehicle). There is, then,
    nearly a clean sweep across the federal circuits holding that Knotts and Karo are
    controlling precedent for GPS searches pre-Jones, and there is not any definitive
    authority to the contrary. Cf. United States v. Maynard, 
    615 F.3d 544
    (D.C. Cir.
    2010) (holding only that prolonged use of a GPS device, for 28 days, violated the
    fourth amendment, a question it considered specifically reserved by Knotts).
    ¶ 42       The first of several such cases to squarely address, after Jones and Davis, the
    issue of whether Knotts and Karo can be considered binding precedent for GPS
    searches conducted before Jones was the Second Circuit’s decision in United States
    v. Aguiar, which we have already quoted above. It will suffice to note that Aguiar
    unequivocally held that Knotts and Karo were binding precedent at the time police
    installed the GPS device on January 23, 2009, and then used it for the next 11 days.
    
    Aguiar, 737 F.3d at 261
    . Aguiar concluded that those cases were sufficient
    precedent for police to reasonably conclude that a warrant was not necessary. 
    Id. In reaching
    this conclusion, the court noted that all of the circuits to consider
    warrantless GPS installation pre-Jones had concluded the same, and that no
    unsettling authority existed among the circuits until at least August 2010 when the
    District of Columbia Circuit in 
    Maynard, 615 F.3d at 565
    , found only that
    prolonged use of GPS tracking for 28 days, 24 hours a day, violated the fourth
    amendment. 3 Aguiar further noted its conclusion that the officers relied in good
    faith on Knotts in placing the GPS device on the defendant’s vehicle was reinforced
    3
    This was the case taken up by the Supreme Court, now captioned United States v. Jones, 565
    U.S. ___, 
    132 S. Ct. 945
    (2012), which brought forth a “tectonic shift” in the legal landscape, to hold
    that the installation and use of the GPS device was an illegal search because of the trespass to the
    vehicle’s exterior. In Maynard, the defendant apparently thought any question as to a possible
    trespass due to the attachment of the GPS was so well settled that he did not raise it. Moreover,
    Maynard rested its holding on the prolonged surveillance (28 days duration), a question it
    considered left open by Knotts. 
    Maynard, 615 F.3d at 558
    .
    - 14 -
    by the fact that many of its sister circuits had reached similar results. 
    Aguiar, 737 F.3d at 262
    . The court further noted that “[t]hese [out-of-circuit] cases are not
    binding precedent and thus do not control our analysis ***, but do support the
    conclusion that relying on Knotts was objectively reasonable.” 
    Id. 4 ¶
    43       The next United States Court of Appeals decision to address whether Knotts
    and Karo are binding precedent for GPS searches pre-Jones was rendered by the
    Fourth Circuit in United States v. Stephens, 
    764 F.3d 327
    (4th Cir. 2014). In
    Stephens, federal and state law enforcement officers in the Baltimore area were
    investigating the defendant, a convicted felon, for possible drug and firearm
    charges. On May 13, 2011, a Baltimore police officer, acting without a warrant,
    placed a GPS device under the rear bumper of the defendant’s vehicle. Three days
    later, Baltimore city police tracked defendant in the vehicle. When the defendant
    arrived at his destination, the officers searched the vehicle and found a loaded
    handgun. The defendant was charged with state law crimes and remained in state
    custody for about three months, until a federal grand jury indicted the defendant on
    a federal firearm charge. The State of Maryland dismissed the charges after the
    federal indictment. 
    Id. at 330.
    The cause then proceeded in federal court. Defendant
    then filed a motion to suppress based on Jones, which was denied by the district
    court. 
    Id. ¶ 44
          The Fourth Circuit in Stephens affirmed the denial of the suppression motion.
    
    Id. at 339.
    In so doing, it began by rejecting the defendant’s narrow view of the
    good-faith inquiry. 
    Id. at 337.
    It noted that “Davis merely establishes the
    inapplicability of the exclusionary rule in one specific circumstance. Davis does
    not, however, alter the general good-faith inquiry which, we reiterate, requires
    consideration of whether a reasonably well-trained officer would have known that a
    search was illegal in light of all of the circumstances.” 
    Id. The court
    then stated that
    in May 2011, when the search was conducted, which was before Jones, neither the
    Supreme Court nor the Fourth Circuit had expressly approved or disapproved of
    warrantless GPS usage. 
    Id. It then
    noted that Knotts was “not exactly on point.” 
    Id. But that
    it was “ ‘widely and reasonably understood to stand for the proposition that
    4
    Aguiar stated that in the aftermath of Jones, there was a split in the circuits, as United States v.
    Katzin, 
    732 F.3d 187
    , 210 (3d Cir. 2013), “adopted a much stricter rule” declining to apply the
    good-faith exception because Knotts and Karo were distinguishable based on the lack of physical
    intrusion in those cases. 
    Aguiar, 737 F.3d at 260
    . However, the Third Circuit granted rehearing
    en banc in Katzin, vacated its previous decision, and instead held that Knotts and Karo were indeed
    binding appellate precedent under Davis.
    - 15 -
    the Fourth Amendment simply was not implicated by electronic surveillance of
    public automotive movements’ [citation], and it was the ‘foundational Supreme
    Court precedent for GPS-related cases’ [citation].” 
    Id. at 338.
    The court continued:
    “After Jones, we know that such an interpretation of Knotts is incorrect. Without
    the benefit of hindsight, however, and with no contrary guidance from the Supreme
    Court or this Court, we believe that a reasonably well-trained officer in this Circuit
    could have relied upon Knotts as permitting the type of warrantless GPS usage in
    this case.” 
    Id. ¶ 45
          The Stephens court found its conclusion to be undergirded by Maryland state
    law precedent (see 
    Kelly, 82 A.3d at 216
    ) holding that Knotts was binding appellate
    court precedent in Maryland under Davis, and therefore, “Maryland police officers
    could ‘reasonably rely on Knotts, pre-Jones, in affixing a GPS tracking device to
    the vehicle of a person under their investigation for the purpose of conducting
    surveillance.’ ” 
    Stephens, 764 F.3d at 338
    . The court noted that the fact that
    defendant was later charged federally did not alter its determination. 
    Id. The court
           then rejected the defendant’s argument that Maryland state law was irrelevant
    because the investigation was federal. 
    Id. at 338
    n.13. The court further noted that it
    was a joint state and federal investigation (id.). Moreover, the court observed that
    “ ‘in the initial stages of a criminal investigation, it may be anything but clear
    whether the conduct being investigated violates state law, federal law, or both,’
    [citation] and ‘the decision with respect to the court in which charges are to be
    brought is often made by the Office of the United States Attorney and the state
    prosecutor, not the investigating officer,’ [citation].” 
    Id. ¶ 46
          The most recent federal court of appeals case to hold that Knotts and Karo are
    “binding appellate precedent” under Davis is United States v. Katzin, 
    769 F.3d 163
           (3d Cir. 2014) (decided en banc on rehearing), where the court conducted an
    excellent and exhaustive analysis of the issues. In Katzin, local police officers and
    the FBI were investigating a series of burglaries of pharmacies in the greater
    Philadelphia area. 
    Id. at 167.
    On December 13, 2010, officers attached a GPS
    device to the undercarriage of defendant’s van while it was parked on a public
    street. Two days later the van was tracked to a certain pharmacy that was
    burglarized at the time defendant’s van was there. The defendant was eventually
    pulled over by state police and defendant was found with items consistent with the
    burglary of the pharmacy. 
    Id. at 168
    - 16 -
    ¶ 47       For the same reasons noted above, Katzin found Knotts and Karo to be binding
    precedent under Davis and law enforcement’s reliance upon it to be objectively
    reasonable. Additionally, Katzin rejected a narrow reading of Davis by noting the
    following:
    “[I]f binding appellate precedent specifically authorizes the precise conduct
    under consideration, then it will likely be binding appellate precedent ***
    under Davis. However, this does not make the reverse syllogism true, namely,
    that if a case is binding appellate precedent under Davis, then it must
    specifically authorize the precise conduct under consideration. Davis’ holding
    is broader: ‘[e]vidence obtained during a search conducted in reasonable
    reliance on binding precedent is not subject to the exclusionary rule.’ [Citation.]
    While reliance is likely reasonable when the precise conduct under
    consideration has been affirmatively authorized by binding appellate precedent,
    it may be no less reasonable when the conduct under consideration clearly falls
    well within rationale espoused in binding appellate precedent, which authorizes
    nearly identical conduct.
    Accordingly, what is far more important to our conclusion is that, despite
    these few dissimilarities [i.e., clandestinely installing a GPS to the exterior of
    the van rather than clandestinely tricking him into unwittingly taking the beeper
    device into his vehicle], the agents’ nearly identical conduct fits squarely within
    the rationale of these decisions.” 
    Id. at 176.
    ¶ 48       Katzin then found in the alternative that even if the factual dissimilarities
    somehow disqualified Knotts and Karo from being binding precedent, which could
    be reasonably relied upon under Davis, the inquiry would not end there. Katzin
    noted that Davis was “but one application of the good faith exception,” although
    undoubtedly the most analogous one. 
    Id. at 177.
    Katzin further noted that “[e]ven
    where Davis does not control, it is our duty to consider the totality of the
    circumstances to answer the objectively ascertainable question whether a
    reasonably well trained officer would have known that the search was illegal.”
    (Internal quotation marks omitted.) 
    Id. It further
    explained that:
    “Davis did not begin, nor end, with binding appellate precedent. Rather,
    binding appellate precedent informed—and ultimately determined—the
    Supreme Court’s greater inquiry: whether the officers’ conduct was deliberate
    and culpable enough that application of the exclusionary rule would ‘yield
    - 17 -
    meaningful[l] deterrence,’ and ‘be worth the price paid by the justice system.’
    [Citation.] We must conduct the same analysis on the facts before us, even in
    the absence of binding appellate precedent.” 
    Id. at 178.
    ¶ 49       Katzin then reviewed the legal landscape as it existed at the time law
    enforcement installed the GPS device in December 2010, which included Knotts
    and Karo and several out-of-circuit decisions specifically upholding warrantless
    GPS installation and tracking. The court found that “[g]iven the panoply of
    authority authorizing their actions, we cannot conclude that a ‘reasonably well
    trained officer would have known that the search was illegal,’ [citation] nor that the
    agents acted with a ‘deliberate, reckless, or grossly negligent disregard for
    [Appellees’] Fourth Amendment rights,’ [citation].” 
    Id. at 184.
    ¶ 50                      VI. Objectively Reasonable Good-Faith Belief
    ¶ 51       This brings us to our second reason for holding that the exclusionary rule is
    inapplicable under the circumstances. We find in the alternative, as the court did in
    Katzin, that, pursuant to the Supreme Court’s general good-faith analysis, the
    detective’s conduct, in relying on the legal landscape that existed at the time the
    search was conducted, was objectively reasonable, and he had no reason to suspect
    that his conduct was wrongful under the circumstances. Therefore, the exclusionary
    rule cannot be invoked here. It simply cannot be applied to a situation where it
    offers little or no deterrent benefit and where there is not the least bit of culpability
    that can be charged to the officer’s conduct in conducting a warrantless GPS search
    in 2009.
    ¶ 52       As noted, “when the police act with an objectively reasonable good-faith belief
    that their conduct is lawful ***, the deterrence rationale loses much of its force, and
    exclusion cannot pay its way.” (Internal quotation marks omitted.) Davis, 564 U.S.
    at ___, 131 S. Ct. at 2427-28 (quoting 
    Leon, 468 U.S. at 907
    n.6). We have already
    discussed the rationale of Knotts and Karo and how they were widely and
    reasonably understood to stand for the proposition that the fourth amendment was
    simply not implicated by electronic surveillance of automotive movements.
    Moreover, Karo’s “brushing off” and “discount[ing]” of the trespass theory
    meshed logically with earlier Supreme Court decisions concluding that the physical
    characteristics of an automobile and its use result in a lessened expectation of
    privacy. Additionally, it must be conceded that there would have been no merit to
    - 18 -
    any argument raised prior to Jones that a physical trespass to the private property of
    a vehicle’s exterior would have constituted a search. See supra ¶ 37 n.1. When all
    of this is combined with the fact that there was no contrary federal circuit court or
    Illinois precedent in existence—but rather all of the federal court of appeals
    authority was in agreement, including the Seventh Circuit, one of the jurisdictions
    in which the police officers in this case operated, specifically having concluded that
    warrantless installation and use of a GPS device did not violate the fourth
    amendment 
    (Garcia, 474 F.3d at 996-98
    ; 
    McIver, 186 F.3d at 1126-27
    )—then the
    circumstances are overwhelmingly in favor of concluding that suppression is not
    warranted here.
    ¶ 53       Given the state of the law with which police officers were faced in 2009, there
    is no merit to defendant’s intimation that the police in this case were risking that
    their conduct would be held unconstitutional. To characterize the officer’s conduct
    in such a manner is simply not a fair assessment in view of the legal landscape.
    ¶ 54       There is also no merit to the notion that the good-faith exception may never be
    applied in a state prosecution where local police reasonably rely upon the legal
    landscape in existence but there are no state law cases addressing the issue.
    “Nothing in Davis itself supports such an interpretation.” 
    Stephens, 764 F.3d at 337
    ; see also 
    Brown, 744 F.3d at 478
    (questioning whether there is any deterrence
    to be gained by telling police they may not “rely on decisions issued by several
    circuits, just because the circuit covering the state in which an investigation is
    ongoing lacks its own precedent”). And none of the Supreme Court precedent cited
    by the parties supports the idea that police may not rely upon the “ ‘constitutional
    norm’ ” that has been established by the legal landscape. See 
    Katzin, 769 F.3d at 184
    (quoting United States v. Peltier, 
    422 U.S. 531
    , 542 (1975) (where the Court
    considered the “constitutional norm” established by the court of appeals when
    determining whether an officer “had knowledge, or [could] properly be charged
    with knowledge, that the search was unconstitutional under the Fourth
    Amendment”)).
    ¶ 55                  VII. Garcia Was Binding Appellate Precedent Under Davis
    ¶ 56       The third major point supporting our holding is that for purposes of Davis’s
    good-faith inquiry, the Seventh Circuit Court of Appeals decision in United States
    v. Garcia, 
    474 F.3d 994
    (7th Cir. 2007), was “binding appellate precedent” for
    - 19 -
    Illinois police officers that they could have reasonably relied upon in 2009. In
    Garcia, the defendant was a convicted felon who had served time for
    methamphetamine offenses. 
    Id. at 995.
    Shortly after his release from prison, police
    received a tip from an informant that the defendant was selling meth and wanted to
    start manufacturing it again. The police located defendant’s vehicle and secretly
    placed a GPS device underneath the rear bumper. Evidence was subsequently
    gathered as a result of the GPS tracking that showed that defendant had resumed the
    manufacture of the illegal drug. 
    Id. at 995-96.
    Garcia specifically rejected the
    contention that the warrantless installation of the GPS device violated the fourth
    amendment. 
    Id. at 996-98.
    The court held that “[t]he defendant’s contention that by
    attaching the *** tracking device the police seized his car is untenable.” 
    Id. at 996.
           And there is no search in the attachment either. 
    Id. at 996-97.
    In so holding, Garcia
    stated the following:
    “But if police follow a car around, or observe its route by means of cameras
    mounted on lampposts or of satellite imaging as in Google Earth, there is no
    search. Well, but the tracking in this case was by satellite. Instead of
    transmitting images, the satellite transmitted geophysical coordinates. The only
    difference is that in the imaging case nothing touches the vehicle, while in the
    case at hand the tracking device does. But it is a distinction without any
    practical difference.” (Emphasis in original.) 
    Id. at 997.
    Thus, Garcia specifically authorized the police practice of attaching a GPS device
    to a vehicle without a warrant in the Seventh Circuit, which geographically
    includes Illinois.
    ¶ 57      Illinois law enforcement’s reliance upon Garcia fits squarely within the
    specific holding of Davis, because it was “binding appellate precedent” in the
    absence of any contrary Illinois state authority as far as the Aurora police detective
    was concerned, who stood in exactly the same shoes as the Alabama police officer
    in Davis that relied upon binding Eleventh Circuit Court of Appeals precedent
    when he conducted a search in the course of investigating a state law traffic offense.
    Accordingly, suppression of the evidence is not warranted.
    ¶ 58       In Davis, local police officers in Greenville, Alabama, conducted a routine
    traffic stop that resulted in the arrest of the defendant, the driver of the vehicle, for a
    state DUI offense. Davis, 564 U.S. at ___, 131 S. Ct. at 2425. The defendant was
    handcuffed by police and placed in the back of the squad car. Id. at ___, 131 S. Ct.
    - 20 -
    at 2425. Police then searched the passenger compartment of the vehicle and found a
    gun in the defendant’s jacket. Id. at ___, 131 S. Ct. at 2425. Defendant was
    ultimately prosecuted in federal court on a firearm charge. Id. at ___, 131 S. Ct. at
    2425-26.
    ¶ 59       Even after a defendant has stepped out of the vehicle and has been subdued by
    police, the prevailing understanding among courts was that New York v. Belton, 
    453 U.S. 454
    (1981), had set down a bright-line rule, authorizing searches incident to
    arrest regardless of the location of the arrestee at the time of the search. Davis, 564
    U.S. at ___, 131 S. Ct. at 2424. The federal district court in Davis denied the motion
    to suppress based on Belton. However, while the case was pending on appeal, the
    Supreme Court decided Arizona v. Gant, 
    556 U.S. 332
    (2009), which upset the
    prevailing interpretation of Belton. Before Gant, the Eleventh Circuit had been one
    of many federal appeals courts to read Belton permissively so as to allow searches
    of the vehicle even after the suspects were handcuffed and placed under arrest. See
    United States v. Gonzalez, 
    71 F.3d 819
    , 822 (11th Cir. 1996) (allowing search
    pursuant to Belton where the suspect was already arrested and handcuffed). When
    the Davis case reached the Supreme Court, it consequently became necessary to
    resolve the question of “whether to apply the exclusionary rule when the police ***
    [rely upon] binding judicial precedent.” Davis, 564 U.S. at ___, 131 S. Ct. at 2428.
    ¶ 60       As noted, the Supreme Court found the Eleventh Circuit precedent in Gonzalez
    to be “binding appellate precedent” for the local Alabama police officers who were
    conducting a routine traffic stop and investigating a purely state traffic offense
    when they decided to conduct a search in objectively reasonable reliance upon
    Gonzalez. 5 Davis, 564 U.S. at ___, 131 S. Ct. at 2428. As we have emphasized
    throughout this opinion, absolutely crucial to the decision in Davis was the lack of
    police culpability. It is hard to fathom, then, how the Aurora police officer in the
    present case—who could have reasonably relied upon Garcia as a case directly on
    point, which was followed to “the letter”—could be considered to be in any
    different position than the Alabama officers in Davis, who relied upon Gonzalez,
    which was followed to the letter. There appears to be no principled basis on which
    to distinguish Davis from the present case, and defendant has not offered one.
    5
    At the time the Alabama police officers conducted their search of the vehicle in Davis, the
    Alabama Supreme Court had not specifically addressed the location of the arrestee at the time of
    arrest. See Gundrum v. State, 
    563 So. 2d 27
    , 28 (Ala. Crim. App. 1990) (noting that its state supreme
    court had not addressed the issue).
    - 21 -
    ¶ 61       The only reason defendant offers for not applying the good-faith exception
    based on reliance upon Garcia is that in the present case, “[t]here is no indication in
    the record that police were doing anything other than investigating a state offense,
    and [defendant] was ultimately charged in state court.” But that is the exact same
    situation as Davis, where state police officers were investigating a state crime they
    had no reason to believe would be prosecuted in federal court. As Davis itself
    shows, in the initial stages of a criminal investigation, it is not clear whether the
    conduct being investigated will end up supporting a violation of state law, federal
    law, or both. Moreover, the decision as to which court to bring the charges, federal
    or state, is almost certainly never made by the investigating officer. See 
    Stephens, 764 F.3d at 338
    n.13. Surely, the decision in Davis cannot be read to rest on the
    fortuitous and conceptually irrelevant distinction that—after the search was already
    undertaken and without knowing what it would produce—Davis’s weapon charge
    could be prosecuted in federal court whereas the robbery charge here could not. We
    decline the invitation to presume that the Supreme Court intended such an absurd
    result.
    ¶ 62       As a final matter, we address the dissent’s claim that we have made a “deeply
    troubling departure” from the holding in People v. Krueger, 
    175 Ill. 2d 60
    (1996),
    and People v. Madison, 
    121 Ill. 2d 195
    (1988), by recognizing the good-faith
    exception of Davis. The dissent is clearly mistaken in its belief that Krueger and
    Madison are at odds with the outcome in the present case.
    ¶ 63       In Krueger, this court first addressed the constitutionality of an Illinois statute
    that allowed police to enter a home without first knocking and announcing their
    office where a warrant had been issued pursuant to the no-knock provision
    contained in the statute. Specifically, the statute allowed a no-knock entry if the
    occupant of the building had possessed a firearm “within a reasonable time period.”
    People v. 
    Krueger, 175 Ill. 2d at 64
    ; 725 ILCS 5/108-8(b)(2) (West 1994). This
    court began by noting that the search and seizure clauses of both the federal and
    state constitutions should be measured using the same standard. Krueger, 
    175 Ill. 2d
    at 65 (which held that any variance between the Supreme Court’s construction
    of the fourth amendment and similar provisions in the Illinois Constitution must be
    based on language in our state constitution, or the debates or committee reports of
    the constitutional convention, that indicate that the provisions of our state
    constitution are intended to be construed differently than the provisions of the
    federal constitution after which they are patterned) (citing People v. Tisler, 
    103 Ill. 2d
    226, 235-36 (1984)). Relying upon Wilson v. Arkansas, 
    514 U.S. 927
    (1995),
    - 22 -
    and People v. Condon, 
    148 Ill. 2d 96
    , 101 (1992), Krueger found that although a
    no-knock entry can be constitutionally permitted if exigent circumstances are
    present, simple possession of firearms by the occupant without more does not
    qualify. Krueger rejected the argument that it would decrease the danger to officers
    to dispense with the usual requirements of knocking and announcing. Krueger, 
    175 Ill. 2d
    at 67-68. This court noted that in a situation where the occupant is not known
    to be violent, it might actually increase the risk of harm to the officers when the
    occupant is threatened by a completely unexpected and unannounced entry. 
    Id. at 68-69.
    ¶ 64        After finding that the statutory provision in question was unconstitutional,
    Krueger then turned to the question of whether the evidence seized from the
    defendant’s home pursuant to the unconstitutional statute should be excluded from
    trial. The State urged this court to adopt Illinois v. Krull, 
    480 U.S. 340
    (1987),
    where the Supreme Court applied the good-faith exception to the exclusionary rule
    in the specific instance of a police officer having relied, in good faith, on a statute
    that authorized a warrantless administrative search, but the statute was later
    declared unconstitutional. Krueger, 
    175 Ill. 2d
    at 70-71. Krueger recognized that
    Krull was controlling as a matter of federal constitutional law, but Krueger
    nevertheless held that “the exclusionary rule arising out of our state constitution
    (Ill. Const. 1970, art. I, § 6) continues to afford the protection abrogated by Krull.”
    
    Id. at 73-74.
    ¶ 65       In departing from the lockstep doctrine of following Supreme Court decisions
    in fourth amendment cases, Krueger referred to this state’s particular history with
    respect to the exclusionary rule’s application to evidence obtained under an
    unconstitutional statute:
    “[Our] exclusionary rule has always been understood to bar evidence gathered
    under the authority of an unconstitutional statute (see Brocamp, 
    307 Ill. 448
    ,
    (adopting the reasoning in Weeks for purposes of our state exclusionary rule);
    
    Weeks, 232 U.S. at 394
    , 58 L. Ed. at 
    656, 34 S. Ct. at 345
    (making it clear that
    the federal exclusionary rule was intended to apply to evidence gathered by
    officers acting under ‘legislative *** sanction’)), so long as that statute
    purported to authorize an unconstitutional search or seizure (see Michigan v.
    DeFillippo, 
    443 U.S. 31
    , 
    61 L. Ed. 2d 343
    , 
    99 S. Ct. 2627
    (1979) (recognizing a
    substantive-procedural distinction not at issue here; specifically holding that
    the fourth amendment exclusionary rule did not apply where an ordinance was
    - 23 -
    held unconstitutional on vagueness grounds)). Consequently, to adopt Krull’s
    extended good-faith exception would drastically change this state’s
    constitutional law.” 
    Id. at 74-75.
    ¶ 66       From the foregoing, it is crystal clear that Krueger held only that the good-faith
    exception as expressed in Krull—which dealt only with an officer’s reliance upon a
    statute later declared unconstitutional—would not be recognized in Illinois for
    purposes of our state constitution. Krueger therefore has no application to the
    present case where an officer could have reasonably relied in objective good faith
    on binding appellate judicial decisions and the constitutional norm that had been
    established thereby. This is further borne out by Krueger’s heavy reliance upon
    Justice O’Connor’s dissenting opinion in Krull arguing that “ ‘the core concern’ ”
    of the framers of the fourth amendment was the enactment of unconstitutional
    statutes by the legislative branch. 
    Id. at 72
    (quoting 
    Krull, 480 U.S. at 362-63
           (O’Connor, J., dissenting, joined by Brennan, Marshall and Stevens, JJ.)). Krueger
    further noted that Justice O’Connor found this history illustrative of the fact that the
    relevant state actors in Krull—legislators—often pose a serious threat to fourth
    amendment values and that this presented a clear distinction from the situation in
    United States v. Leon, 
    468 U.S. 897
    (1984), where a judicial officer issues a warrant
    that is not supported by probable cause. Krueger, 
    175 Ill. 2d
    at 72. We find that the
    same threat to fourth amendment values that was of concern in Krueger is not
    present when police reasonably rely in objective good faith on judicial precedent.
    Nor is there any concern here of a “grace period” giving effect to the operation of
    an unconstitutional legislative act.
    ¶ 67       Finally, Krueger expressly reaffirmed that this court would continue to accept
    both the good-faith exception as expressed in Leon and the rationale used to support
    it. Notably, Krueger did not imply that it would refuse to follow any further
    expansion or a different articulation of the good-faith exception made by the
    Supreme Court in future cases.
    ¶ 68       Given the actual rationale and holding of Krueger, it is no surprise that
    defendant did not argue before this court that it controlled the outcome here. The
    dissent’s treatment of it obviously misses the mark.
    ¶ 69       The same can be said for the dissent’s unsolicited reliance upon Madison. In
    that case, the plain language of the statute required police to obtain a warrant before
    searching and seizing evidence discovered during an administrative inspection.
    - 24 -
    
    Madison, 121 Ill. 2d at 201
    . The Madison court noted that the problem with the
    State’s argument for application of the good-faith exception was that “[t]he officers
    were acting in defiance of, not reliance on,” the plain words of the statute when they
    conducted their warrantless search and seizure. 
    Id. at 208.
    Such conduct cannot be
    considered objectively reasonable, and therefore the dissent’s use of Madison to
    support its position is puzzling. Madison would be instructive if, in the present
    case, police had defied the plain language of an existing statute or judicial ruling
    and substituted their own erroneous interpretation. But that of course is not the case
    here. In trying to fit a square peg into a round hole, the dissent seems to purposely
    ignore that the good-faith exception has an objective reasonableness component.
    See Davis, 564 U.S. at___, 131 S. Ct. at 2423-24 (“searches conducted in
    objectively reasonable reliance on binding appellate precedent are not subject to the
    exclusionary rule”); see also 
    Katzin, 769 F.3d at 176
    (reliance is reasonable “when
    the conduct under consideration clearly falls within rationale espoused in binding
    appellate precedent, which authorizes nearly identical conduct”).
    ¶ 70                                      CONCLUSION
    ¶ 71        We hold that the good-faith exception applies and that the evidence obtained
    against defendant should not be excluded. We find Knotts, Karo and Garcia to be
    “binding appellate precedent” within the meaning of Davis and that Aurora police
    could have reasonably relied upon such precedent in placing and using the GPS
    device in 2009. In the alternative, we further find that it would have been
    objectively reasonable for police to rely upon the legal landscape and the
    constitutional norm that had been established at the time of the search that allowed
    warrantless attachment and use of GPS technology. In so doing, we conclude that
    there was a complete lack of police culpability in this case and that there would be
    little or no deterrent value to suppressing the evidence. At the same time, the cost to
    society of letting a clearly guilty repeat offender go free is too great and the
    exclusionary rule cannot pay its way in this case. Finally, we caution that after
    Jones law enforcement should beware of its holding and how it relates to GPS
    attachment and monitoring.
    ¶ 72        For the foregoing reasons, we affirm the appellate court’s remand for a new
    trial because of the Rule 401(a) violation. However, we reverse the portion of the
    appellate court’s judgment that vacated the trial court’s order denying defendant’s
    - 25 -
    motion to quash arrest and suppress evidence. We also reverse the portion of the
    appellate court’s judgment that remanded the cause for further proceedings on
    defendant’s motion.
    ¶ 73      Appellate court affirmed in part and reversed in part.
    ¶ 74      Circuit court affirmed in part and reversed in part.
    ¶ 75      Cause remanded.
    ¶ 76      JUSTICE BURKE, dissenting:
    ¶ 77       In a deeply troubling departure from this court’s constitutional precedent, the
    majority now recognizes for purposes of our state exclusionary rule the
    “good-faith” exception to the federal exclusionary rule set forth by the United
    States Supreme Court in Davis v. United States, 564 U.S. ___, 
    131 S. Ct. 2419
           (2011). Under Davis, when, in good faith, the police conduct an unconstitutional
    search based on their objectively reasonable reliance on “binding appellate
    precedent” which is later overruled, evidence resulting from the search is not
    subject to the federal exclusionary rule. Id. at ___, 131 S. Ct. at 2423-24. Applying
    Davis to the facts before this court, the majority holds that the good-faith exception
    applies because binding appellate precedent at the time of the search authorized the
    warrantless installation of a GPS device on the vehicle driven by defendant.
    Alternatively, the majority holds that the evidence obtained from the GPS device is
    not subject to suppression because the police reasonably relied upon persuasive,
    nonbinding precedent from other jurisdictions. In applying the good-faith
    exception, the majority unfortunately chooses not to resolve the issue at the heart of
    this case—the constitutionality of warrantless GPS tracking of a suspect by the
    police.
    ¶ 78       I disagree with the decision reached by the majority in several respects. First,
    the majority’s extension of the good-faith exception in Davis to our state
    exclusionary rule is directly at odds with People v. Krueger, 
    175 Ill. 2d 60
    (1996),
    where we refused to recognize a good-faith exception for searches conducted in
    objectively reasonable reliance on a statute which is later held to be
    unconstitutional. In Krueger, we held that the good-faith exception was
    - 26 -
    incompatible with the exclusionary rule arising out of our state constitution. We
    interpreted our exclusionary rule as providing greater protection of a citizen’s right
    to be free from unconstitutional searches and seizures than the federal exclusionary
    rule. 
    Id. at 73-76.
    For reasons similar to those set forth in Krueger, I would decline
    the State’s request to recognize the Davis good-faith exception for searches
    conducted in reasonable reliance on binding appellate precedent.
    ¶ 79       The majority’s alternative holding, based on a broad reading of dicta in Davis,
    amply demonstrates why this court should reject Davis as contrary to the Illinois
    exclusionary rule. The majority goes well beyond the holding in Davis and finds
    that the good-faith exception applies to searches conducted in the absence of any
    binding precedent where the police reasonably rely on the prevailing “legal
    landscape.” The majority also invites the lower courts to conduct a general
    “good-faith inquiry” which is not limited to the specific circumstances in Davis or
    any other Supreme Court case. By reading into Davis a much broader good-faith
    exception than the one delineated in the Court’s holding, the majority affords less
    protection to the rights of Illinois citizens to be free from unconstitutional searches
    and seizures than intended by the Supreme Court. The result will be the erosion,
    and possible destruction, of the exclusionary rule in this state.
    ¶ 80       Lastly, I disagree with the majority that, at the time the police officers installed
    the GPS device and used it to monitor the vehicle’s movements, there was any
    relevant, binding authority which could have authorized their conduct. The case
    law cited by the majority is either inapposite or was not binding on Illinois state
    courts. For these reasons, I respectfully dissent.
    ¶ 81                                     BACKGROUND
    ¶ 82       In 2009, the Aurora police covertly installed a GPS device on a vehicle
    defendant was known to drive for the purpose of tracking defendant’s movements
    in the vehicle. The police did not obtain a warrant prior to installing the GPS
    device. Location data from the GPS device was used to connect defendant to a gas
    station robbery which took place approximately 24 hours after the device was
    installed. Defendant was subsequently arrested and charged with aggravated
    robbery, robbery, and burglary. His motion to quash arrest and suppress the
    evidence gleaned from the GPS tracker was denied, and he was convicted of all
    charges.
    - 27 -
    ¶ 83       While defendant’s appeal was pending in the appellate court, the United States
    Supreme Court decided United States v. Jones, 565 U.S. ___, 
    132 S. Ct. 945
           (2012). The Jones Court held that the government’s installation of a GPS device on
    a suspect’s vehicle, and its use of the device to monitor the vehicle’s movements,
    constitutes a search under the fourth amendment (U.S. Const., amend. IV). Jones,
    565 U.S. at ___, 132 S. Ct. at 949. Taking Jones into consideration, the appellate
    court below held that a fourth amendment search took place when the police
    attached the GPS device to the vehicle and used it to track defendant’s movements.
    
    2013 IL App (2d) 100659
    , ¶ 13. Accordingly, the appellate court vacated the trial
    court’s order denying defendant’s motion to quash arrest and suppress evidence.
    The court then remanded the matter for a new suppression hearing to determine
    whether defendant had a sufficient possessory interest in the vehicle to raise a
    constitutional claim under Jones. 
    Id. ¶ 29
    . 6
    ¶ 84       Addressing the State’s appeal of that judgment, the majority now declines to
    consider whether defendant had a sufficient possessory interest in the vehicle to
    challenge the search under Jones, or even whether an unconstitutional search took
    place in the first instance. Supra ¶ 18. Instead, the majority finds that the good-faith
    exception in Davis applies because the police installed the GPS device in
    objectively reasonable reliance on the “legal landscape” in existence at that time,
    or, alternatively, on binding appellate precedent authorizing the installation. Supra
    ¶ 31. The majority thus finds that defendant is not entitled to a new suppression
    hearing because, even if an unconstitutional search took place, any evidence
    resulting from the search would be admitted upon retrial.
    ¶ 85                                            ANALYSIS
    ¶ 86           I. The Davis Good-Faith Exception Is Incompatible With Our State
    Exclusionary Rule
    ¶ 87       The United States Supreme Court first recognized a limited “good-faith”
    exception to the federal exclusionary rule in United States v. Leon, 
    468 U.S. 897
           (1984). In Leon, the Supreme Court held that the fourth amendment exclusionary
    rule does not bar evidence obtained by a police officer who reasonably relies, in
    6
    The appellate court also reversed defendant’s convictions and remanded the matter for a new
    trial based on improper Illinois Supreme Court Rule 401(a) admonishments. The majority affirms
    this part of the appellate court’s judgment.
    - 28 -
    objective good faith, on a search warrant issued by a neutral and detached
    magistrate, but which is later found to be unsupported by probable cause. 
    Id. at 919-22.
    The Court reasoned that application of the exclusionary rule in this
    situation would not serve the primary purpose of the rule, which is to deter future
    police misconduct. 
    Id. at 918-21.
    This court recognized the Leon good-faith
    exception for purposes of the state exclusionary rule in People v. Stewart, 
    104 Ill. 2d
    463, 477 (1984); see also People v. Turnage, 
    162 Ill. 2d 299
    (1994) (applying
    Leon).
    ¶ 88        The Supreme Court extended Leon to a warrantless search for the first time in
    Illinois v. Krull, 
    480 U.S. 340
    (1987). Krull held that the federal exclusionary rule
    does not bar evidence seized by a police officer who reasonably relies, in objective
    good faith, on a statute authorizing a warrantless administrative search, where the
    statute is later held to be unconstitutional. 
    Id. at 349-50.
    In People v. Krueger, 
    175 Ill. 2d 60
    (1996), however, this court declined to recognize Krull’s expansion of the
    Leon good-faith exception as a matter of state constitutional law.
    ¶ 89        In Krueger, police officers executed a search warrant issued pursuant to a
    “no-knock” statute (725 ILCS 5/108-8(b) (West 1994)), which this court held was
    unconstitutional under both the fourth amendment and article I, section 6, of the
    Illinois Constitution of 1970. Krueger, 
    175 Ill. 2d
    at 69-70. The State argued that
    we should reverse the circuit court’s suppression order pursuant to the Krull
    good-faith exception. We rejected the State’s argument, holding that the
    exclusionary rule arising from article I, section 6, provides greater protection from
    unconstitutional searches and seizures than the federal exclusionary rule. 
    Id. at 73-74.
    We observed that this court has the authority to interpret state constitutional
    provisions more broadly than the Supreme Court interprets similar provisions of
    the federal constitution. 
    Id. at 74
    (citing People v. Perry, 
    147 Ill. 2d 430
    , 436
    (1992)). We also noted that the exclusionary rule is a judicially created remedy
    with a long history in Illinois, traced back to People v. Brocamp, 
    307 Ill. 448
           (1923). In Brocamp, this court adopted an independent state exclusionary rule
    almost 40 years before Mapp v. Ohio, 
    367 U.S. 643
    (1961), made the federal
    exclusionary rule applicable to the states. Krueger, 
    175 Ill. 2d
    at 74-75. See also
    Illinois v. Gates, 
    462 U.S. 213
    , 221-22 (1983); 
    id. at 251
    (White, J., concurring) (a
    state court may rest a decision to modify its state exclusionary rule on adequate and
    independent state grounds).
    - 29 -
    ¶ 90      In rejecting Krull as a matter of state law, we balanced the legitimate aims of
    law enforcement against the right of our citizens to be free from unreasonable
    governmental intrusion. We found that the citizens’ rights prevailed, holding:
    “[w]e are not willing to recognize an exception to our state exclusionary rule
    that will provide a grace period for unconstitutional search and seizure
    legislation, during which time our citizens’ prized constitutional rights can be
    violated with impunity. We are particularly disturbed by the fact that such a
    grace period could last for several years and affect large numbers of people.
    This is simply too high a price for our citizens to pay. We therefore conclude
    that article I, section 6, of the Illinois Constitution of 1970 prohibits the
    application of Krull’s extended good-faith exception to our state exclusionary
    rule.” Krueger, 
    175 Ill. 2d
    at 75-76.
    ¶ 91       Our decision in Krueger relied on the reasoning set forth in Justice O’Connor’s
    dissent in Krull. See 
    id. at 72-73.
    Justice O’Connor criticized the Krull majority’s
    extension of the Leon good-faith exception, arguing that this newly created
    exception was not supported by the rationale in Leon. 
    Id. at 72
    (citing 
    Krull, 480 U.S. at 361
    (O’Connor, J., dissenting, joined by Brennan, Marshall and Stevens,
    JJ.)). First, she observed that, in contrast to a search authorized by a facially valid
    warrant later found to be defective, there was a “ ‘powerful historical basis for the
    exclusion of evidence gathered pursuant to a search authorized by an
    unconstitutional statute.’ ” 
    Id. (quoting Krull,
    480 U.S. at 362 (O’Connor, J.,
    dissenting, joined by Brennan, Marshall and Stevens, JJ.)). Second, Justice
    O’Connor argued that legislators were much more likely to pose a threat to fourth
    amendment protections than a neutral magistrate issuing a search warrant in a
    specific case. She noted:
    “ ‘Judicial authorization of a particular search does not threaten the liberty of
    everyone, but rather authorizes a single search under particular circumstances.
    The legislative act, on the other hand, sweeps broadly, authorizing whole
    classes of searches, without any particularized showing. A judicial officer’s
    unreasonable authorization of a search affects one person at a time; a
    legislature’s unreasonable authorization of searches may affect thousands or
    millions and will almost always affect more than one. Certainly the latter poses
    a greater threat to liberty.’ ” 
    Id. at 72
    -73 (quoting 
    Krull, 480 U.S. at 365
              (O’Connor, J., dissenting, joined by Brennan, Marshall and Stevens, JJ.)).
    - 30 -
    ¶ 92       Moreover, Justice O’Connor observed that the majority’s decision was at odds
    with the retroactivity principles in Griffith v. Kentucky, 
    479 U.S. 314
    (1987), which
    held that “ ‘basic norms of constitutional adjudication’ and fairness to similarly
    situated defendants” required that opinions announcing new constitutional rules in
    criminal cases apply to all cases pending on direct review at the time the new rule is
    declared. 
    Krull, 480 U.S. at 368
    (O’Connor, J., dissenting, joined by Brennan,
    Marshall and Stevens, JJ.) (quoting 
    Griffith, 479 U.S. at 322
    ). Justice O’Connor
    pointed out that, under the novel approach taken by the Krull majority, “ ‘no
    effective remedy is to be provided in the very case in which the statute at issue was
    held unconstitutional.’ ” Krueger, 
    175 Ill. 2d
    at 73 (citing 
    Krull, 480 U.S. at 368
           (O’Connor, J., dissenting, joined by Brennan, Marshall and Stevens, JJ.)). As
    Justice O’Connor noted, “the lack of a remedy leaves no incentive for the aggrieved
    defendant to challenge the statute as unconstitutional.” 
    Id. (citing Krull,
    480 U.S. at
    369 (O’Connor, J., dissenting, joined by Brennan, Marshall and Stevens, JJ.)).
    ¶ 93       The same flaws identified by this court in Krueger with respect to the Krull
    good-faith exception are inherent in the good-faith exception for police searches
    “conducted in objectively reasonable reliance on binding appellate precedent”
    (Davis, 564 U.S. at ___, 131 S. Ct. at 2423-24), applied by the majority in the case
    at bar. Under both good-faith exceptions, the police are said to have reasonably
    relied on existing authority (an authorizing statute in Krull; binding appellate
    authority in Davis), which is later found to be unconstitutional or overruled by
    subsequent case law. In both situations, there is a “grace period,” which could last
    several years, during which the State is free to perform unconstitutional searches
    and seizures with impunity. See Krueger, 
    175 Ill. 2d
    at 75; 
    Krull, 480 U.S. at 361
           (O’Connor, J., dissenting, joined by Brennan, Marshall and Stevens, JJ.). Just as in
    Krull, the Davis good-faith exception has the potential to affect thousands of people
    by authorizing a whole class of searches, in contrast to a single search authorized by
    a defective search warrant. See Krueger, 
    175 Ill. 2d
    at 72-73; 
    Krull, 480 U.S. at 365
           (O’Connor, J., dissenting, joined by Brennan, Marshall and Stevens, JJ.).
    Moreover, under both Krull and Davis, the lack of a remedy leaves no incentive for
    a defendant to challenge a statute as unconstitutional or to seek to overturn case law
    authorizing an unconstitutional search. See Krueger, 
    175 Ill. 2d
    at 73; 
    Krull, 480 U.S. at 368
    (O’Connor, J., dissenting, joined by Brennan, Marshall and Stevens,
    JJ.); see also Davis, 564 U.S. at ___, 131 S. Ct. at 2438 (Breyer, J., dissenting,
    joined by Ginsburg, J.) (criticizing the Davis majority for adopting a good-faith
    exception at odds with retroactivity principles and arguing that a defendant has
    - 31 -
    little incentive to challenge court precedent). Finally, unlike Leon, which “simply
    instructs courts that police officers may rely upon a facially valid search warrant,”
    the good-faith exceptions in Krull and Davis are difficult for courts to administer
    because it is “not apparent how much constitutional law the reasonable officer is
    expected to know.” 
    Krull, 480 U.S. at 366-67
    (O’Connor, J., dissenting, joined by
    Brennan, Marshall and Stevens, JJ.); see also Davis, 564 U.S. at ___, 131 S. Ct. at
    2437 (Breyer, J., dissenting, joined by Ginsburg, J.) (application of the Davis
    good-faith exception will result in “complex legal argument and police force
    confusion”).
    ¶ 94        This court noted in Krueger that Krull had been severely criticized by fourth
    amendment scholars. See Krueger, 
    175 Ill. 2d
    at 76 (citing 1 Wayne R. LaFave,
    Search and Seizure § 1.3(h), at 96-99 (3d ed. 1996)). Davis also has received sharp
    criticism from legal scholars for its potential to erode, or even nullify, the federal
    exclusionary rule. See 1 Wayne R. LaFave, Search and Seizure § 1.3(h), at 132-46
    (5th ed. 2012); George M. Dery III, “This Bitter Pill”: The Supreme Court’s
    Distaste for the Exclusionary Rule in Davis v. United States Makes Evidence
    Suppression Impossible to Swallow, 23 Geo. Mason U. Civ. Rts. L.J. 1, 19-23
    (2012); James J. Tomkovicz, Davis v. United States: The Exclusion Revolution
    Continues, 9 Ohio St. J. Crim. L. 381, 400-02 (2011); David A. Moran, Hanging
    On By a Thread: The Exclusionary Rule (or What’s Left of It) Lives for Another
    Day, 9 Ohio St. J. Crim. L. 363, 375-80 (2011). Several state courts already have
    rejected Davis on state law grounds. See, e.g., Brown v. State, 
    767 S.E.2d 299
    ,
    302-03 (Ga. Ct. App. 2014); State v. Anderson, 
    445 S.W.3d 895
    , 912 (Tex. App.
    2014); State v. Koivu, 
    272 P.3d 483
    , 518-19 (Idaho 2012).
    ¶ 95       The majority’s recognition of the Davis good-faith exception in this case is
    totally at odds with Krueger, where this court held that our state exclusionary rule
    provides greater protection of our citizens’ constitutional rights than the federal
    exclusionary rule. I cannot see a way to reconcile today’s decision with Krueger. I
    would find that Krueger precludes this court from adopting the Davis good-faith
    exception for purposes of our state exclusionary rule, and thus, that defendant is
    entitled to a new suppression hearing.
    - 32 -
    ¶ 96      II. The Majority’s “Good-Faith Inquiry” and “Legal Landscape” Theories Are
    Not Supported by the Narrow Holding in Davis
    ¶ 97       Even if I agreed that the Davis good-faith exception should be extended to the
    exclusionary rule arising out of article I, section 6, of the Illinois Constitution, I
    could not sign on to the majority’s alternative holding in this case. The majority
    finds that the good-faith exception in Davis is not limited to “objectively
    reasonable reliance on binding appellate precedent.” See Davis, 564 U.S. at ___,
    131 S. Ct. at 2423-24. According to the majority, in the absence of any binding
    precedent authorizing the actions of the police:
    “[i]t would still be necessary to conduct the ‘good-faith inquiry’ and consider
    ‘whether a reasonably well trained officer would have known that the search
    was illegal in light of all of the circumstances.’ [Citation.] Clearly, application
    of the good-faith inquiry is not limited to the specific circumstances addressed
    by the Supreme Court in Davis or in any other Supreme Court case. [Citation.]
    The Supreme Court has found the exclusionary rule to be inapplicable in a
    variety of settings after undertaking the good-faith analysis, and the fact that a
    court might apply the good-faith exception in a new context not yet addressed
    by the Supreme Court does not mean that it is creating a ‘new, freestanding
    exception’ to the exclusionary rule. [Citations.]
    ***
    *** [W]e find in the alternative that, pursuant to the Supreme Court’s
    general good-faith analysis, the police conduct in relying on the legal landscape
    that existed at the time was objectively reasonable and a reasonable officer had
    no reason to suspect that his conduct was wrongful under the circumstances.”
    Supra ¶ 29.
    ¶ 98       I disagree with both aspects of the majority’s alternative holding: (1) that the
    Supreme Court’s good-faith decisions contemplate a general “good-faith inquiry”
    not limited to the specific circumstances in those decisions; and (2) that, in the
    absence of binding appellate precedent, the good-faith exception applies to a search
    conducted in objectively reasonable reliance on the existing “legal landscape.”
    ¶ 99      First, the authority the majority cites for the proposition that the “good-faith
    inquiry” is not limited to the specific circumstances in Davis, or in any other
    Supreme Court case, is a decision of the United States Court of Appeals for the
    - 33 -
    Fourth Circuit (United States v. Stephens, 
    764 F.3d 327
    , 338 (4th Cir. 2014)),
    which, obviously, is not binding on this court. See In re May 1991 Will County
    Grand Jury, 
    152 Ill. 2d 381
    , 398 (1992). I do not find the reasoning in that case to
    be persuasive. The Supreme Court has, thus far, taken great care to limit application
    of the good-faith exception to specific, atypical searches involving reasonable
    reliance by the police. See United States v. Leon, 
    468 U.S. 897
    (1984)
    (later-invalidated warrant); Illinois v. Krull, 
    480 U.S. 340
    (1987) (subsequently
    overturned statute); Arizona v. Evans, 
    514 U.S. 1
    (1995) (error in court-maintained
    database); Herring v. United States, 
    555 U.S. 135
    (2009) (error in
    police-maintained database); Davis v. United States, 564 U.S. ___, 
    131 S. Ct. 2419
            (2011) (later-reversed binding appellate precedent). In my view, these decisions
    should be read narrowly and their holdings limited to the particular factual
    scenarios before the Court. Warrantless searches generally are considered per se
    unreasonable unless they fall within “ ‘a few specifically established and
    well-delineated exceptions.’ ” People v. Galvin, 
    127 Ill. 2d 153
    , 169-70 (1989)
    (quoting Katz v. United States, 
    389 U.S. 347
    , 357 (1967)). The majority’s adoption
    of a “general good-faith analysis” (supra ¶ 31) under which evidence resulting
    from an unconstitutional search will be admitted in the absence of gross negligence
    by the police, regrettably turns the exception into the rule. See United States v.
    Katzin, 
    769 F.3d 163
    , 189-90 (3d Cir. 2014) (en banc) (Greenaway, J., dissenting,
    joined by McKee, C.J., and Ambro, Fuentes, and Smith, JJ.).
    ¶ 100       Under the majority’s reasoning, police officers are authorized to conduct
    warrantless searches based solely on their own good judgment about the existence
    of probable cause, and, if they are wrong, the evidence will almost never be
    suppressed. The alarming scope of the majority’s alternative holding is exactly why
    this court rejected the Krull good-faith exception in Krueger. We feared that the
    good-faith exception would weaken our state exclusionary rule by leaving citizens
    without a remedy for constitutionally invalid searches and seizures. The dissenters
    in Davis echoed this concern with respect to the federal exclusionary rule.
    “[A]n officer who conducts a search that he believes complies with the
    Constitution but which, it ultimately turns out, falls just outside the Fourth
    Amendment’s bounds is no more culpable than an officer who follows
    erroneous ‘binding precedent.’ Nor is an officer more culpable where circuit
    precedent is simply suggestive rather than ‘binding,’ where it only describes
    how to treat roughly analogous instances, or where it just does not exist. Thus,
    if the Court means what it now says, if it would place determinative weight
    - 34 -
    upon the culpability of an individual officer’s conduct, and if it would apply the
    exclusionary rule only where a Fourth Amendment violation was ‘deliberate,
    reckless, or grossly negligent,’ then the ‘good faith exception’ will swallow the
    exclusionary rule. ***
    Any such change (which may already be underway) would affect not ‘an
    exceedingly small set of cases,’ [citation] but a very large number of cases,
    potentially many thousands each year. [Citation.] And since the exclusionary
    rule is often the only sanction available for a Fourth Amendment violation, the
    Fourth Amendment would no longer protect ordinary Americans from
    ‘unreasonable searches and seizures.’ [Citations.] It would become a
    watered-down Fourth Amendment, offering its protection against only those
    searches and seizures that are egregiously unreasonable.” (Emphasis in
    original.) Davis, 564 U.S. at ___, 131 S. Ct. at 2438-40 (Breyer, J., dissenting,
    joined by Ginsburg, J.).
    ¶ 101       The majority’s expansion of the Davis good-faith exception also runs afoul of
    this court’s holding in People v. Madison, 
    121 Ill. 2d 195
    (1988), abrogated on
    other grounds by Horton v. California, 
    496 U.S. 128
    (1990). In Madison, 
    121 Ill. 2d
    at 207-08, police officers conducted a warrantless inspection of a salvage yard
    pursuant to an authorizing provision in the Illinois Vehicle Code (Ill. Rev. Stat.
    1983, ch. 95½, ¶ 5-403). The officers then seized 26 incomplete certificates of
    vehicle title without first obtaining a search warrant, despite statutory language
    stating that a warrant was required. The owner of the salvage yard was charged with
    possession of the incomplete titles. At trial, the defendant’s motion to suppress the
    evidence was granted, and the case was dismissed. The appellate court affirmed.
    This court affirmed the lower courts. Madison, 
    121 Ill. 2d
    at 211. We first held that
    the plain language of section 5-403 of the Vehicle Code required police officers to
    obtain a warrant before seizing evidence in the course of a valid administrative
    search. 
    Id. at 200-06.
    Because the officers seized the titles without a warrant, the
    evidence was illegally obtained and subject to suppression. The State next argued
    that the evidence, even if illegally obtained, was not subject to the exclusionary rule
    because the officers relied, in good faith, on their own interpretation of the statute.
    We rejected the State’s invitation to extend the good-faith exceptions in Leon and
    Krull to these circumstances. We said that the officers were acting in defiance of,
    not reliance on, the language in the authorizing statute. 
    Id. at 208.
    Moreover, we
    held:
    - 35 -
    “to adopt the extension of the good-faith exception proposed by the State would
    essentially eviscerate the exclusionary rule as it is currently enforced. Police
    officers would be encouraged to defy the plain language of statutes as written in
    favor of their own interpretations in conducting searches and seizures. Such a
    proposal, giving the police unlimited authority to conduct searches and seizures
    until specifically restricted by the legislature or the courts, is fundamentally at
    odds with the central purpose of deterring police misconduct which underlies
    the exclusionary rule.” 
    Id. ¶ 102
          Thus, this court in Madison expressly refused to recognize an extension of the
    good-faith exception, reasoning that such an extension would eviscerate our state
    exclusionary rule by encouraging police officers to rely on their own interpretations
    of statutes rather than seek to obtain a warrant. In contravention of what we said in
    Madison, the majority now recognizes a general exception to the exclusionary rule,
    whereby an officer’s interpretation of a statute or case law, if made in “good faith,”
    would prevent the exclusion of evidence. Today’s decision is a radical departure
    from our settled case law in both Krueger and Madison, which the majority does
    not reconcile.
    ¶ 103        Under the second part of the majority’s alternative holding, the majority rules
    that, in the absence of binding appellate precedent authorizing a search, Davis
    allows a good-faith exception for searches conducted in reasonable reliance on the
    “legal landscape” that existed at the time the search was conducted. Supra ¶¶ 31,
    51. The majority identifies only two cases decided prior to April 23, 2009, which
    might have justified the officers’ actions at the time of the search. See supra ¶ 52
    (citing United States v. Garcia, 
    474 F.3d 994
    , 996-98 (7th Cir. 2007), and United
    States v. McIver, 
    186 F.3d 1119
    , 1126-27 (9th Cir. 1999)). These two nonbinding
    decisions were, in the majority’s view, sufficient to comprise the prevailing “legal
    landscape” upon which the police could have reasonably relied in conducting their
    warrantless search. 7
    ¶ 104      The majority’s “legal landscape” theory is directly at odds with Davis, which
    contains multiple, repeated references to the officers’ reasonable reliance on
    7
    The majority states that the Supreme Court’s “beeper” cases, United States v. Knotts, 
    460 U.S. 276
    (1983), United States v. Karo, 
    468 U.S. 705
    (1984), were “widely and reasonably understood to
    stand for the proposition that the fourth amendment was simply not implicated by electronic
    surveillance of automotive movements.” Supra ¶ 52. However, most of the federal court opinions
    referenced by the majority were decided after the search in this case took place, and, thus, could not
    have been relied upon by the Aurora police.
    - 36 -
    “binding” precedent. Davis recognized a narrow exception, whereby “searches
    conducted in objectively reasonable reliance on binding appellate precedent are not
    subject to the exclusionary rule.” Davis, 564 U.S. at ___, 131 S. Ct. at 2423-24. The
    Court found that the officers’ search of the defendant incident to his arrest
    “followed the Eleventh Circuit’s Gonzalez precedent to the letter.” Id. at ___, 131
    S. Ct. at 2428. The Court emphasized that the officers strictly complied with
    “then-binding Circuit law” and “scrupulously adhered to governing law” in the
    Eleventh Circuit. Id. at ___, ___, 131 S. Ct. at 2428, 2434. Furthermore, in the
    course of explaining that its acceptance of a good-faith exception would not deter
    defendants from challenging existing fourth amendment doctrine in future cases,
    the Court noted that “defendants in jurisdictions in which the question remains
    open will still have an undiminished incentive to litigate the issue.” (Emphasis
    added.) Id. at ___, 131 S. Ct. at 2433. See also Davis, 564 U.S. at ___, 131 S. Ct. at
    2435 (Sotomayor, J., concurring in the judgment) (noting that “[t]his case does not
    present the markedly different question whether the exclusionary rule applies when
    the law governing the constitutionality of a particular search is unsettled”). Davis
    thus recognized that its holding was limited to jurisdictions which clearly
    authorized the officers’ conduct.
    ¶ 105       The majority’s alternative holding is an alarming and unwarranted expansion of
    the carefully circumscribed good-faith exception in Davis. There are no references
    in Davis to “generally accepted authority,” “legal landscape,” or persuasive or
    well-reasoned precedent. See United States v. Ortiz, 
    878 F. Supp. 2d 515
    , 539-40
    (E.D. Pa. 2012). See also United States v. Martin, 
    712 F.3d 1080
    , 1081-82 (7th Cir.
    2013) (per curiam) (where there was no binding appellate precedent in the Eighth
    Circuit at the time that Iowa law enforcement officers attached a GPS device to the
    defendant’s car, the court declined to expand Davis to allow police to rely on “a
    diffuse notion of the weight of authority around the country”). Accordingly, the
    majority’s holding that the Davis good-faith exception applies based on the
    officers’ objectively reasonable reliance on the “legal landscape” is a deliberate
    misreading of Davis.
    ¶ 106       The majority’s alternative holding is troubling for the additional reason that it
    signifies this court’s abandonment of its duty to decide constitutional issues and
    shifts such decisionmaking to the police. Based on its application of the Davis
    good-faith exception, the majority declines to consider the important constitutional
    issues raised in this appeal. At the time of the search in this case, there was no
    binding precedent in Illinois with respect to warrantless, surreptitious GPS
    - 37 -
    installation and monitoring. And because the majority refuses to address the
    constitutionality of GPS surveillance, there still is none. I fear that the majority’s
    expansion of the good-faith doctrine will inevitably lead to the avoidance of
    meaningful analysis of the constitutionality of searches and seizures, particularly
    those involving new technology.
    ¶ 107              III. Knotts, Karo, and Garcia Were Not “Binding” Authority
    Under Davis
    ¶ 108       My final point of disagreement is with the majority’s application of the Davis
    good-faith exception to the police officers’ objectively reasonable reliance on
    United States v. Knotts, 
    460 U.S. 276
    (1983), United States v. Karo, 
    468 U.S. 705
            (1984), and United States v. Garcia, 
    474 F.3d 994
    (7th Cir. 2007). None of these
    cases constitutes “binding” precedent within the meaning of Davis.
    ¶ 109       Knotts held that the use of a covert beeper device to monitor a vehicle’s
    movements during a single journey did not amount to a search because “[a] person
    traveling in an automobile on public thoroughfares has no reasonable expectation
    of privacy in his movements from one place to another.” 
    Knotts, 460 U.S. at 281-82
    , 285. The beeper was placed in a chloroform container with the consent of
    the container’s owner before being transferred to the defendant. 
    Id. at 278.
    The
    Court expressly left open the question of whether the warrantless installation of the
    device converted the subsequent tracking into a search. 
    Id. at 279
    n.*. See also 
    id. at 286
    (Brennan, J., concurring in the judgment, joined by Marshall, J.) (“I think this
    would have been a much more difficult case if respondent had challenged, not
    merely certain aspects of the monitoring of the beeper ***, but also its original
    installation.”). Thus, Knotts did not “specifically authorize[ ]” the “particular police
    practice” (emphasis omitted) (Davis, 564 U.S. at ___, 131 S. Ct. at 2429) in this
    case—the installation of the GPS device on the Kia, and officers could not have
    reasonably relied on Knotts in their decision to install the device without a warrant.
    ¶ 110       Karo addressed the government’s placement of a beeper device in a container
    of ether, which was sold to the respondents by a government informant and used to
    monitor them without respondents’ knowledge. The Court held that the
    respondents had no legitimate expectation of privacy in the container because, at
    the time of the beeper’s placement, the respondents did not own the container.
    
    Karo, 468 U.S. at 711
    . Because the container’s owner consented to the beeper
    - 38 -
    placement, the actual installation of the beeper violated no one’s fourth amendment
    rights. 
    Id. The Court
    went on to hold that the transfer of the beeper-laden can to the
    respondents did not constitute a search because it conveyed no information that
    respondents wished to keep private and, thus, infringed no privacy interests. 
    Id. at 712.
    Nor did the transfer constitute a seizure, because there was no “meaningful
    interference with an individual’s possessory interests” in the property. (Internal
    quotation marks omitted.) 
    Id. As in
    Knotts, the Karo Court “did not consider a
    scenario in which the government installs a tracking device on property that already
    belongs to the defendant.” United States v. Sparks, 
    711 F.3d 58
    , 65 n.4 (1st Cir.
    2013).
    ¶ 111       Neither Knotts nor Karo stands for the proposition that the warrantless
    installation of a tracking device onto a privately owned vehicle without the owner’s
    consent is lawful under the fourth amendment. Therefore, the police in this case
    could not have reasonably relied on either of these cases to conclude that the
    nonconsensual installation of the GPS device was constitutionally authorized.
    Significantly, United States v. Jones, 565 U.S. ___, 
    132 S. Ct. 945
    (2012), in which
    the Court found that installation of a GPS device was a search, did not overrule
    either Knotts or Karo but distinguished them on the basis that neither case involved
    the nonconsensual installation of a tracking device onto private property. In other
    words, the Supreme Court expressly rejected the reading of those cases which the
    majority adopts here. See id. at ___, 132 S. Ct. at 951-52 (holding that a trespassory
    installation of a tracking device was not at issue in Knotts because the beeper was
    placed in the container with the consent of the then-owner, and Knotts did not
    challenge that installation); id. at ___, 132 S. Ct. at 952 (holding that the installation
    of the beeper in Karo was with the consent of the original owner; moreover,
    because “Karo accepted the container as it came to him, beeper and all, [he] was
    therefore not entitled to object to the beeper’s presence. [Citation.] Jones, who
    possessed the Jeep at the time the Government trespassorily inserted the
    information-gathering device, is on much different footing.”)
    ¶ 112       The fact that the Jones Court distinguished Knotts and Karo, but did not
    overrule them, takes this case out of the Davis good-faith exception. In Davis, the
    police officers’ search followed binding Circuit precedent “to the letter,” and,
    although that precedent was later overturned, the officers’ conduct at the time of the
    search “was in strict compliance with then-binding Circuit law and was not
    culpable in any way.” Davis, 564 U.S. at ___, 131 S. Ct. at 2428. The complete
    absence of police culpability or deliberate misconduct “doom[ed] Davis’s claim”
    - 39 -
    because exclusion of the evidence would not yield any meaningful deterrence. Id.
    at ___, 131 S. Ct. at 2428-29. Under the Court’s reasoning, where binding appellate
    authority “specifically authorizes a particular police practice” (emphasis in
    original) (id. at ___, 131 S. Ct. at 2429), exclusion of the evidence does not serve
    the purpose of deterring unconstitutional police conduct because the sole
    responsibility for the fourth amendment violation lies with the appellate judiciary
    and not with the police. When the police conduct a search in reliance on precedent
    that does not specifically authorize the particular practice, however, the
    exclusionary rule does provide meaningful deterrence. It deters law enforcement
    officers from taking the fourth amendment inquiry into their own hands by
    extrapolating from, or analogizing to, existing case law, instead of seeking a
    warrant from a neutral magistrate. See United States v. Katzin, 
    769 F.3d 163
    ,
    191-92 (3d Cir. 2014) (en banc) (Greenaway, J., dissenting, joined by McKee, C.J.,
    and Ambro, Fuentes, and Smith, JJ.). The exclusionary rule also encourages law
    enforcement officials to “err on the side of constitutional behavior” in the face of
    unsettled or equivocal fourth amendment law. See Davis, 564 U.S. at ___, 131 S.
    Ct. at 2435 (Sotomayor, J., concurring in the judgment); State v. Mitchell, 
    323 P.3d 69
    , ¶ 31 (Ariz. Ct. App. 2014). “[T]he Davis requirement of ‘binding appellate
    precedent’ means that government agents should not be and need not be vested with
    discretion in predicting or anticipating how the law will develop and how it should
    be applied. *** The solution is simple: the import of Davis is that officers acting
    without clearly applicable binding appellate guidance should err on the side of
    caution and obtain a warrant.” United States v. Ortiz, 
    878 F. Supp. 2d 515
    , 542
    (E.D. Pa. 2012).
    ¶ 113       In contrast to Davis, where binding precedent explicitly authorized the officers’
    actions and the officers were not culpable in any way because they followed the
    Eleventh Circuit precedent “to the letter” (Davis, 564 U.S. at ___, ___, 131 S. Ct. at
    2428, 2429), here there was no binding precedent which specifically authorized the
    police officers’ conduct. See, e.g., id. at ___, 131 S. Ct. at 2437 (Breyer, J.
    dissenting, joined by Ginsburg, J.) (Davis did not address officers’ reliance on a
    decision with “clearly distinguishable” or “highly analogous” facts); United States
    v. Sparks, 
    711 F.3d 58
    , 64 (1st Cir. 2013) (Davis good-faith exception applies only
    to precedent that is “clear and well-settled”). Thus, there is no basis for holding that
    the police reasonably relied on Knotts or Karo as authorization for their installation
    of the GPS device without first obtaining a warrant or permission from the
    vehicle’s owner.
    - 40 -
    ¶ 114       The majority also holds that Davis applies because the Aurora police acted in
    objectively reasonable reliance on the Seventh Circuit’s decision in United States v.
    Garcia, 
    474 F.3d 994
    (7th Cir. 2007). Garcia held that the warrantless installation
    of a GPS tracking device on a vehicle in order to obtain information about a
    suspect’s movements in the vehicle was not a fourth amendment “search.” 
    Id. at 996-98.
    Unlike the Eleventh Circuit precedent relied on by the police in Davis,
    however, Garcia was not “binding appellate precedent” on Illinois state courts, the
    jurisdiction in which the Aurora police were operating and in which defendant was
    prosecuted.
    ¶ 115       The applicable body of case law upon which a law enforcement officer may
    reasonably rely consists of those decisions that are binding on the jurisdiction in
    which the officer operates. See Hudson v. Michigan, 
    547 U.S. 586
    , 599 (2006)
    (noting that officers are expected to learn and abide by “what is required of them”
    by courts having jurisdiction over them). The Davis good-faith exception thus is
    not available unless there exists binding precedent within the particular jurisdiction
    governing the law enforcement officials. See United States v. Aguiar, 
    737 F.3d 251
    ,
    261 (2d Cir. 2013) (holding that “binding appellate precedent” within the meaning
    of Davis refers only to precedent of the Second Circuit and the United States
    Supreme Court); United States v. Barraza-Maldonado, 
    732 F.3d 865
    , 867 (8th Cir.
    2013) (“[f]or the good faith exception to apply, officers performing a particular
    investigatory action—such as GPS tracking—must strictly comply with binding
    appellate precedent governing the jurisdiction in which they are acting”).
    ¶ 116       Where state courts are silent on the constitutionality of a particular police
    practice, law enforcement officers who engage in that practice without first
    obtaining a search warrant from a neutral magistrate must knowingly accept the
    risk that their conduct will be found unconstitutional. First, they risk that a state
    court may decide to depart from federal case law in interpreting a federal
    constitutional provision. Caleb Mason, New Police Surveillance Technologies and
    the Good-Faith Exception: Warrantless GPS Tracker Evidence After United States
    v. Jones, 13 Nev. L.J. 60, 76 (2012). Decisions of a United States court of appeals,
    while persuasive, are not binding on state courts. In re May 1991 Will County
    Grand Jury, 
    152 Ill. 2d 381
    , 398 (1992) (citing People v. Fields, 
    135 Ill. 2d 18
    , 72
    (1990)); see also People v. Eyler, 
    133 Ill. 2d 173
    , 225 (1989) (“[u]ntil the Supreme
    Court of the United States has spoken, State courts are not precluded from
    exercising their own judgments on Federal constitutional questions”). Second, the
    police risk that a state court may interpret a constitutional provision in its own state
    - 41 -
    constitution more strictly than a corresponding provision in the federal constitution.
    See In re May 1991 Will County Grand Jury, 
    152 Ill. 2d 381
    , 390 (1992). In fact,
    this court has held that the Illinois Constitution of 1970 “offers greater protection
    against the invasion of an individual’s privacy rights than does the Federal
    Constitution.” 
    Id. Thus, in
    a posture of state silence and federal approval of a
    particular search, the exclusionary rule serves its intended purpose: to “deter future
    Fourth Amendment violations.” Davis, 564 U.S. at ___, 131 S. Ct. at 2426; see also
    id. at ___, 131 S. Ct. at 2435 (Sotomayor, J., concurring in the judgment) (“when
    police decide to conduct a search or seizure in the absence of case law (or other
    authority) specifically sanctioning such action, exclusion of the evidence obtained
    may deter Fourth Amendment violations” (emphasis added)); Caleb Mason, New
    Police Surveillance Technologies and the Good-Faith Exception: Warrantless GPS
    Tracker Evidence After United States v. Jones, 13 Nev. L.J. 60, 76 (2012).
    ¶ 117       Of course, the police can avoid the harsh consequence of the evidence being
    excluded by obtaining a warrant in the first place, rather than gambling that the
    search will not eventually be held unconstitutional by a court in that jurisdiction.8
    In this case, the officers were state police officers investigating a state crime and
    had no reason to believe that the case would be prosecuted in federal court. 9
    Accordingly, the officers could not have presumed, in reliance on Garcia, that the
    warrantless installation of the GPS device was constitutional.
    ¶ 118       For the foregoing reasons, I respectfully dissent.
    ¶ 119       JUSTICES FREEMAN and THEIS join in this dissent.
    8
    A warrant is now statutorily required in Illinois before the police may use a GPS to track a
    person’s movements. Effective August 26, 2014, the Freedom From Location Surveillance Act
    requires a law enforcement agency to obtain a court order supported by probable cause before using
    an electronic device to obtain “current or future location information pertaining to a person or his or
    her effects.” Pub. Act 98-1104, § 10 (eff. Aug. 26, 2014).
    9
    The majority emphasizes that the Aurora police detective “stood in exactly the same shoes” as
    the Alabama police officer in Davis, who conducted a search in the course of investigating a state
    traffic offense and was found to have relied on federal appellate precedent. Supra ¶¶ 31, 52. At the
    time of the search in Davis, however, Alabama state case law expressly authorized the search. State
    v. Gargus, 
    855 So. 2d 587
    , 590 (Ala. Crim. App. 2003); see Caleb Mason, New Police Surveillance
    Technologies and the Good-Faith Exception: Warrantless GPS Tracker Evidence After United
    States v. Jones, 13 Nev. L.J. 60, 77 n.101 (2012). By contrast, prior to the search in this case, no
    Illinois state court had addressed the constitutionality of GPS installation or tracking.
    - 42 -