Supreme Court: GPS Devices Equivalent Of A Search, Police Must Get Warrant WASHINGTON - The Supreme Court says police must get a search warrant before using GPS technology to track criminal suspects. The court ruled in the case of Washington, D.C., nightclub owner Antoine Jones. A federal appeals court in Washington overturned his drug conspiracy conviction because police did not have a warrant when they installed a GPS device on his vehicle and then tracked his movements for a month. The GPS device helped authorities link Jones to a suburban house used to stash money and drugs. He was sentenced to life in prison before the appeals court overturned the conviction. The Supreme Court agreed with the appeals court. The case is U.S. v. Jones, 10-1259.