That needs the right oversight! I love it when technology is used for good. But giving access to records and our movement without very strict controls, IS a violation of privacy. Sure, track known criminals and people who are solid suspects. But the judicial system has to prosecute abusers and make it very public!
A sherriff who bullied a phone company into tracking his daughter, by claiming she was kidnapped was out of line and should lose his job.
Powerful technology is like any other tool - it can be misused. And freedom of movement, without cameras and GPS tracking seems a most fundamental right.
FBI Tracks Suspects' Cell Phones Without a Warrant - Newsweek.com