The US Supreme Court ruled today that police must first obtain a search warrant before using GPS devices to track a suspect's vehicle, agreeing with an earlier appeals court ruling on the case, but rejecting the Obama administration's position on the case. In delivering the decision, Justice Antonin Scalia wrote that the court holds "that the government's installation of a GPS device on a target's vehicle, and its use of that device to monitor the vehicle's movements, constitutes a 'search.'" The case itself concerned a Washington DC nightclub owner and suspected drug dealer, Antoine Jones, who had his car's movements monitored for a month and was eventually sentenced to life in prison
