No, the Supreme Court Did Not Ban Geofence Warrants: What It Actually Held—and What It Didn't

Chatrie v. United States, 609 U.S. ___ (2026)

TL;DR

The Supreme Court held that law enforcement conducts a Fourth Amendment search when it compels Google to disclose a user's historical Location History data through a geofence warrant.

The Court concluded that individuals maintain a reasonable expectation of privacy in this highly detailed location information, despite Google's possession of the data. Importantly, however, the Court did not decide whether the geofence warrant in this case was constitutional, instead remanding for the Fourth Circuit to determine whether the warrant satisfied the Fourth Amendment's requirements of probable cause and particularity.

The Landscape Before Chatrie: A Nation Divided

Before Chatrie, there was no nationwide rule governing geofence warrants. Courts generally agreed that geofence warrants represented a novel investigative technique, but they disagreed sharply about how the Fourth Amendment applied.

Some courts concluded that users voluntarily shared their location information with Google and therefore had no reasonable expectation of privacy under the traditional third-party doctrine.

Other courts, relying heavily on Carpenter v. United States, viewed Google's Location History as precisely the type of comprehensive digital surveillance the Supreme Court had already recognized as deserving Fourth Amendment protection.

The result was a patchwork of decisions. In some jurisdictions, geofence warrants survived constitutional challenges—often because courts applied the good-faith exception—even while expressing serious concerns about their breadth. Other courts questioned whether these warrants resembled the type of "general warrants" the Fourth Amendment was specifically designed to prevent.

The Fourth Circuit itself illustrated this divide. The district court concluded the warrant violated the Fourth Amendment but denied suppression under the good-faith exception. A divided Fourth Circuit panel later held that obtaining the data was not a Fourth Amendment search because the information had been voluntarily exposed to Google. When the Fourth Circuit reheard the case en banc, however, the judges split evenly (7-7), leaving the constitutional question unresolved and setting the stage for Supreme Court review.

Against that backdrop, the Supreme Court did not resolve every constitutional question surrounding geofence warrants. Instead, it answered the threshold question that had divided courts nationwide: obtaining Google's historical Location History data is a Fourth Amendment search. Whether a particular geofence warrant ultimately satisfies the Fourth Amendment's requirements of probable cause and particularity remains a separate inquiry.

The Facts

On May 20, 2019, a masked robber entered a credit union in Midlothian, Virginia, brandished a handgun, and stole approximately $195,000. Surveillance footage showed the suspect approaching the bank from a nearby church while apparently speaking on a cell phone, but investigators were unable to identify him through traditional investigative methods.

Believing the suspect had been carrying a phone, investigators sought a geofence warrant directed to Google.

Unlike a traditional warrant directed toward a known suspect, this warrant sought information regarding every Google device located within a 150-meter radius of the bank during the hour surrounding the robbery.

The warrant employed Google's now-familiar three-step process:

• Step One: Google produced anonymized location information for every device located inside the geofence during the one-hour period.

• Step Two: Investigators selected certain devices for additional review, and Google provided more detailed location information—including movement outside the geofence during a two-hour period.

• Step Three: Investigators selected a smaller group of devices, and Google revealed subscriber identifying information, including names and phone numbers.

• 
  

Google initially identified nineteen anonymous devices.

Investigators narrowed the list to nine.

Ultimately, Google identified three account holders.

One was Okello Chatrie, whose movement appeared consistent with the robbery. Additional investigation ultimately resulted in federal robbery charges.

Procedural History

The district court concluded that the geofence warrant violated the Fourth Amendment, but denied suppression under the good-faith exception established in United States v. Leon.

A divided Fourth Circuit panel affirmed on different grounds, holding that no Fourth Amendment search had occurred because Chatrie voluntarily exposed his Location History to Google.

The Fourth Circuit then granted rehearing en banc but split evenly (7-7), resulting in an affirmance without resolving the constitutional question.

The Supreme Court granted certiorari only on the threshold issue:

Did obtaining Google's Location History data constitute a Fourth Amendment search?

The Issue

Does law enforcement conduct a Fourth Amendment search when it obtains a person's historical Google Location History data through a geofence warrant?

The Holding

Yes.

The Supreme Court held that individuals maintain a reasonable expectation of privacy in Google's Location History records. Accordingly, when officers compel Google to disclose those records, they conduct a Fourth Amendment search.

What the Court Did Not Decide

This point cannot be overstated.

The Supreme Court did not hold geofence warrants unconstitutional.

Nor did it determine whether the warrant used in this case satisfied the Fourth Amendment.

Instead, the Court remanded the case for the Fourth Circuit to determine whether each stage of this multi-step warrant complied with the constitutional requirements of:

• probable cause; and

• particularity.

That distinction is likely to become one of the most misunderstood aspects of this decision.

The Court's Reasoning

1. Carpenter Controls—and Google Location History Is Even More Revealing

The Court relied heavily upon Carpenter v. United States, where it held that accessing historical cell-site location information (CSLI) constitutes a Fourth Amendment search.

Justice Kagan explained that Google's Location History is not merely similar to CSLI—it is more intrusive.

Unlike CSLI, Location History:

• records location approximately every two minutes;

• averages roughly 720 location points each day;

• can locate a phone within approximately twenty meters;

• can estimate which floor of a building a user occupies.

Accordingly, if CSLI deserved constitutional protection in Carpenter, Google Location History deserved at least as much.

2. Two Hours Is Still a Search

The government attempted to distinguish Carpenter because investigators here obtained only two hours of location information.

The Court rejected that argument.

Justice Kagan explained that Fourth Amendment protections do not suddenly appear after surveillance reaches some arbitrary duration.

Instead, once the government accesses a protected category of information, the Fourth Amendment applies regardless of whether investigators seek two hours or two weeks of data. The Court also emphasized that even short-term location data can reveal intensely personal information, such as visits to medical providers, religious institutions, political gatherings, or private residences.

3. The Third-Party Doctrine Does Not Automatically Apply

The government also argued that Chatrie voluntarily shared his information with Google and therefore forfeited any reasonable expectation of privacy.

The Court disagreed.

Although Google technically possessed the records, users do not meaningfully "share" this information in the traditional sense contemplated by Smith v. Maryland or United States v. Miller.

Rather, modern smartphone users routinely enable applications and services that necessarily generate location information as part of ordinary device use. The Court rejected the notion that individuals surrender Fourth Amendment protection simply by using commonplace smartphone features.

4. Particularity and Probable Cause Still Matter

Perhaps the most significant practical takeaway is what the Court deliberately left unresolved.

This warrant authorized investigators to:

• collect data from every device inside the geofence;

• independently determine which users deserved additional scrutiny;

• request broader location histories for those users; and

• finally obtain subscriber identities.

The Court observed that the warrant said very little about how investigators were to make those decisions. Rather than resolve those issues itself, the Court instructed the Fourth Circuit to determine whether each stage satisfied the Fourth Amendment's probable cause and particularity requirements.

Justice Jackson's Concurrence

Justice Jackson agreed with the majority that obtaining the Location History constituted a search but would have gone further.

In her view, the second and third stages of the warrant were constitutionally defective because they granted investigators excessive discretion while providing insufficient judicial oversight. She characterized the process as giving officers a "roving commission" to determine which additional information to obtain after the warrant had already issued.

Justice Gorsuch's Concurrence

Justice Gorsuch agreed that the government conducted a search but criticized the Court's continued reliance on the "reasonable expectation of privacy" framework established by Katz.

Instead, he argued the analysis should return to the Fourth Amendment's text, asking whether digital information such as Location History constitutes a person's "papers" or "effects." Although he reached the same result, his concurrence signals continued interest in reshaping Fourth Amendment doctrine around property-based principles rather than evolving privacy expectations.

Street Takeaways

• Geofence warrants remain available. This opinion does not prohibit their use.

• Compelling Google Location History is now unquestionably a Fourth Amendment search.

• Investigators should expect heightened scrutiny of the geographic scope, time period, probable cause, and particularity supporting geofence warrants.

• Multi-step warrants that permit investigators to expand the search without clearly defined judicial limits may become the focus of future litigation.

• Agencies should review warrant templates involving geofence, reverse-location, and other digital location requests to ensure affidavits carefully explain the need for each stage of the requested search.

Why This Matters

Chatrie is more than a case about geofence warrants. It represents the Supreme Court's continued recognition that modern digital technologies allow the government to reconstruct an individual's life with extraordinary precision. Following Riley, Carpenter, and now Chatrie, the Court has made clear that traditional Fourth Amendment principles must evolve to address increasingly sophisticated forms of digital surveillance.

For law enforcement, the lesson is not that these investigative tools are off limits. Rather, it is that the constitutional justification supporting their use must be as carefully developed as the technology itself.

Disclaimer

This case brief is provided for educational purposes only and is not intended as legal advice. It summarizes key aspects of the court's opinion but does not replace a review of the full decision. Laws and legal interpretations vary by jurisdiction and continue to evolve. Officers should consult agency policy, current legal authority, prosecutors, and legal counsel when applying these principles to specific facts or investigations.