Government Challenged Over GPS Tracking

Even as the Sixth Circuit says no warrant is needed to follow cell phone GPS signals, civil liberties groups beg to differ

San Francisco—A federal district court is poised to determine whether the government can use cell phone data obtained without a warrant to establish an individual's location. In an amicus brief filed Monday, the Electronic Frontier Foundation (EFF) and the Center for Democracy & Technology (CDT) argue that this form of surveillance is just as unconstitutional as the warrantless GPS tracking the U.S. Supreme Court already shot down in this case.