The political thriller The Ghost Writer hinged on the memory chip of a GPS device in a borrowed car. The whole panoply of issues around information generated by US citizens as they go about our daily business (and access to that information by the state) is to be decided by the US Supreme Court. It’ll take a while for the rights of those in other jurisdictions to be defined. The Jones case will address not only whether the placement of a space-age tracking device on the outside of a vehicle without a warrant qualifies as a search, but also whether the intensive monitoring it allows is different in kind from conventional surveillance by police officers who stake out suspects and tail their cars. “The Jones case requires the Supreme Court to decide whether modern technology has turned law enforcement into Big Brother, able to monitor and record every move we make outside our homes,” said Susan Freiwald, a law professor at the University of San Francisco.