You have no right to privacy in public places, and police can observe you to gather evidence without a warrant. But having a detective tail you everywhere you go is expensive. So why not automate the process by hiding a compact GPS tag to monitor your location? The system can then log your whereabouts automatically to allow police to see if any suspicious movement patterns arise.
“Not so fast,” says the U.S. Court of Appeals for the District of Columbia in a ruling that people *do* have an expectation to privacy in the totality of their public movements over extended periods. More from Ars Technica and EFF.
