New Senate Subcommittee Addresses Mobile Technologies and Privacy: Apple, Google to Appear
Funny thing about the U.S. Constitution: it address the activities of government officials and agencies — including restraints on those activities — but not the activities of commercial business and individuals. The latter are left to federal, state, and local laws.
So, when the government conducts warrantless surveillance using GPS, the issue may come before the U.S. Supreme Court or state and federal judges at other levels. If private companies do it, they may end up at a congressional hearing.
By Inside GNSS