Supreme Court Weighs Privacy Against Geofence Warrants in Robbery Case

WASHINGTON — The Supreme Court will hear arguments Monday in a case that puts a fast-growing law enforcement surveillance tool under intense constitutional review, with significant implications for how far police can go in harvesting digital location data from ordinary Americans without individualized suspicion.

The dispute, Chatrie v. United States, stems from an armed robbery on May 20, 2019, at the Call Federal Credit Union in Midlothian, Virginia. At 4:50 p.m., a man walked in holding a cell phone, handed a teller a note demanding cash, brandished a gun, and ordered the manager to open the safe. He left with $195,000. Local detectives had few leads. Rather than relying on traditional investigative methods, they obtained what is known as a geofence warrant, a request approved by a federal judge that compelled Google to turn over information on any cell phones that had been physically present near the bank during a set time window.

Google responded with data on 19 users. Investigators narrowed their focus to Okello Chatrie, whose phone had Google’s Location History feature enabled, the setting that powers services such as Google Maps. The information showed Chatrie’s device was in or near the credit union ten minutes before the robbery and left the area shortly afterward. He was arrested, pleaded guilty to federal charges of armed robbery and brandishing a firearm, and received a sentence of nearly 12 years in prison. Chatrie preserved his right to appeal the lawfulness of the geofence warrant itself, arguing that the government’s actions violated his Fourth Amendment right to be free from unreasonable searches and seizures.

Geofence warrants have become an increasingly important instrument for prosecutors and police as smartphones and location-tracking services have proliferated. The technique allows investigators to draw a virtual boundary around a crime scene and demand that technology companies identify every device that crossed into that digital fence during a specified period, even if authorities have no particular suspect in mind at the outset. The tool has been used in investigations ranging from bank heists to other serious crimes across the country. Its growing prominence is exactly why the Supreme Court’s review matters: a ruling against the government could sharply limit a tactic that has helped solve cases when conventional evidence is lacking.

The Justice Department defends the practice. In its brief to the justices, the government argues that Chatrie had no reasonable expectation of privacy in “two hours of public movements” because he had voluntarily opted into sharing his location data with Google. Officials emphasize that obtaining the warrant required a three-step process before a magistrate judge, providing judicial oversight. “The Court has made clear that an individual lacks a reasonable expectation of privacy in information that he ‘assumed the risk’ of sharing with others, including about his short-term public movements,” the brief states. “The warrant here sought movement information visible to anyone near petitioner.”

Chatrie’s legal challenge contends that such warrants are fundamentally different from traditional ones. Rather than specifying a particular person or place to be searched, geofence requests function like digital dragnet operations that sweep up location records from potentially dozens or hundreds of innocent bystanders whose only connection to a crime is that they happened to be nearby with their location services turned on. Privacy advocates have long warned that this reverses the normal order of criminal investigation: instead of starting with a suspect and seeking evidence, police start with a location and demand evidence about everyone who was there. The Fourth Amendment, they argue, was written precisely to prohibit such general warrants that allow indiscriminate rummaging through people’s private affairs.

This case represents the latest chapter in the Supreme Court’s ongoing struggle to apply 18th-century constitutional protections to 21st-century technology. Previous rulings have recognized that digital records can reveal far more intimate details about a person’s life than physical searches ever could. Yet the justices have also shown deference to law enforcement needs when public safety is at stake. How the court reconciles those impulses here will shape police practices for years.

The outcome could force investigators to develop probable cause before casting such wide digital nets, or it could greenlight an expanded role for tech companies as de facto data suppliers to law enforcement. For millions of Americans whose phones constantly track and store their movements, often without them fully understanding the downstream consequences, the decision will clarify whether that information remains theirs or becomes a standing invitation for government review whenever a crime occurs nearby.

The arguments arrive at a moment when location-enabled devices are ubiquitous. What began as a convenience for mapping apps has quietly become one of the most potent surveillance tools available to authorities. Whether the Supreme Court views that development as an inevitable evolution of policing or a dangerous expansion of state power beyond what the Constitution permits will be the central question when the justices take the bench Monday. The ruling, expected later this year, could either rein in or legitimize a practice that has already reshaped how criminal cases are built in the digital age.