The U.S. Supreme Court rules that the Constitution’s privacy protections apply to people’s cellphone location information. In its decision, the Court holds that acquiring location data from a cellphone implicates constitutional privacy interests, and that warrants used to obtain such data must comply with those protections. The ruling arises from a case involving a bank robbery, where investigators identified a suspect after obtaining location information linked to the suspect’s phone through a “geofence” warrant. According to reports, the geofence approach gathers location data for devices found in a specific geographic area during a defined time window, then connects that data to individuals whose locations align with the incident. The Court’s decision indicates that location-history data cannot be treated as outside constitutional safeguards simply because it is held by a third party or collected via digital location technologies. The justices’ ruling sets a standard requiring law enforcement to obtain appropriate warrants for cellphone location information consistent with constitutional requirements. The decision is expected to affect future investigations that rely on cellphone location tracking and geofence warrants.