Supreme Court to Debate Whether Police May Seek Sweeping Cellphone Location Data in Investigations
Why It Matters
The Supreme Court is set to take up one of the most significant Fourth Amendment cases in years — one that could reshape how law enforcement solves crimes and how much of Americans’ digital lives are accessible to government investigators. The outcome will affect not just federal agents but local and state police departments across the country, including in Idaho, who increasingly rely on tech company data to crack cold cases.
At stake is whether geofence warrants — sweeping requests directed at tech companies that capture location data on millions of people simultaneously — are consistent with the Constitution’s prohibition on unreasonable searches and seizures.
What Happened
The case stems from a 2019 bank robbery in Virginia, where a suspect entered a bank, passed a teller a threatening note demanding cash, and fled. Local police initially had no suspect. Investigators noticed security camera footage showing the robber using his cellphone before the crime, prompting authorities to serve Google with a geofence warrant — a demand for location data on every device within 300 meters of the bank at the time of the robbery.
Using that data, police identified and arrested Okello Chatrie. Subsequent federal search warrants turned up robbery-style demand notes, nearly $100,000 in cash, and a 9 mm pistol in his bedroom. Chatrie later confessed and was sentenced to more than 11 years in prison. He entered a conditional guilty plea, however, reserving the right to appeal the geofence warrant itself.
The Richmond-based 4th U.S. Circuit Court of Appeals ruled against Chatrie, holding that because users voluntarily allow tech companies to collect their location data, the warrant did not constitute a “search” under the Fourth Amendment. The Supreme Court is now set to hear the case.
The Constitutional Debate
The Justice Department, defending the use of geofence warrants, argues that Chatrie had enabled his phone’s location history and took no steps to disable it — making the data accessible to Google and therefore not protected by a reasonable expectation of privacy. U.S. Solicitor General D. John Sauer made that case directly to the justices.
Chatrie’s legal team counters that a 2018 Supreme Court precedent — Carpenter v. United States — requires law enforcement to establish probable cause before accessing cellphone location data. If that standard applies to tower data, they argue, it must also apply to GPS-grade data that can pinpoint a person’s location within 3 meters every two minutes.
“The Fourth Amendment was born of the Founders’ revulsion for general warrants and writs of assistance — instruments that allowed the government to search first and develop suspicions later,” Chatrie’s attorney Adam Unikowsky argued before the Court.
The case intersects with growing concerns over government overreach into digital life — a concern that crosses traditional partisan lines. As the federal judiciary continues to weigh civil liberties questions in incarceration and law enforcement contexts, the high court’s ruling here could set boundaries for an entirely new frontier of digital surveillance.
By the Numbers
- 300 meters — the radius of the geofence used in the Virginia bank robbery investigation
- 3 meters every 2 minutes — the precision of the location data at issue in the case
- 11+ years — the prison sentence Chatrie received following his conditional guilty plea
- $100,000 — approximately the amount of cash found in Chatrie’s residence after execution of follow-up search warrants
- 1967 — the year the Supreme Court established that the Fourth Amendment applies even without a physical intrusion, in a foundational wiretapping case involving a payphone
Zoom Out
Geofence warrants have sharply divided lower courts, and Fourth Amendment questions involving digital technology have produced unexpected alliances on the Supreme Court. In Carpenter, Chief Chief Justice John Roberts joined the court’s then-liberal wing to rule in favor of privacy protections — a coalition that may or may not hold in this case.
The stakes extend far beyond cell towers and GPS pings. Legal experts warn the principles at play could govern how authorities access financial transactions, photos, emails, and other personal data stored with third-party tech companies. As the federal government expands its enforcement posture in other areas of the law, a ruling expanding geofence warrant authority could empower a wide range of investigative techniques.
William McGeveran, dean of the University of Minnesota Law School and a data privacy expert, described the case as “huge,” noting that the issues apply to “any of the digital technology that is tracking your location, which is a lot of things.” Google, which had received the majority of geofence warrants, has since changed its data storage policies — though legal experts say the constitutional principles at stake remain very much alive.
What’s Next
The Supreme Court is scheduled to hear oral arguments in the case. A ruling is expected before the Court’s term concludes, typically by late June. Depending on how the justices rule, Congress could face pressure to pass legislation clarifying privacy standards for digital data held by third-party companies — though no such legislation has advanced through either chamber. Law enforcement agencies nationwide are monitoring the outcome closely, as a ruling against geofence warrants could require significant changes to investigative practices that have become increasingly common.
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