Do the Police need a warrant to put a GPS tracking device on your car? UPDATED! They do!

A couple of months ago, November 18, 2011 to be exact, I looked at the issue of whether the police needed a warrant to install a GPS tracking device on your vehicle.  This week the Supreme Court decided the answer (They do.) and I'm happy to report that it was unanimous!  The Supreme Court unanimously held in U.S. v. Jones that the warrantless use of a GPS tracking device by the police violated the Fourth Amendment. The Court said that a warrant is required "[w]here, as here, the government obtains information by physically intruding on a constitutionally protected area like a car.