Supreme Court throws out and remands lower court decision related to law enforcement using 'geofencing' to solve an armed robbery case

"We hold that police officers invade a cell-phone user’s reasonable expectation of privacy when they access his Location History. It does not matter if the time period scrutinized was only two hours. Nor does it matter that the materials obtained were handed over by a third-party tech company. When the government “accesses historical cell phone” location information—Location His tory as much as CSLI—it “conducts a search under the Fourth Amendment.”"