The U.S. Supreme Court ruled 6-3 on Monday that law enforcement must obtain warrants to access cellphone location data through geofence warrants, finding such searches protected under the Fourth Amendment. The decision vacated a lower court ruling in the case of Okello Chatrie, a Virginia man convicted of robbing a credit union in 2019, and sent the case back for further review.
Core Facts
The Court, led by Justice Elena Kagan, held that cellphone location data is personal and private, akin to emails or documents, and thus subject to Fourth Amendment protections. The ruling does not outright ban geofence warrants but requires courts to assess whether warrants meet constitutional standards of reasonableness.
Deeper Dive & Context
The Case and Warrant Process
Police obtained a geofence warrant after a $195,000 armed robbery in Midlothian, Virginia. The warrant directed Google to identify devices within 150 meters of the crime scene during a one-hour window. Google initially provided anonymized data for 19 users, which police narrowed to three suspects, including Chatrie. Evidence found at his home, including cash and a pistol, led to his conviction.
Dissenting Views
Justices Samuel Alito, Clarence Thomas, and Amy Coney Barrett dissented, arguing that Chatrie had no reasonable expectation of privacy in data voluntarily shared with Google. Alito called the ruling an "irresponsible escapade" that destabilized Fourth Amendment jurisprudence.
Broader Implications
The decision builds on the Court’s 2018 ruling in Carpenter v. United States, which established that police generally need warrants for historical cellphone location data. Civil libertarians hailed the ruling as a win for privacy, while law enforcement officials expressed concerns about the impact on investigations.
Ongoing Questions
The Court did not resolve whether the specific warrant in Chatrie’s case was valid, leaving that determination to the lower courts. The ruling underscores the challenges of applying constitutional protections to rapidly evolving technology.