IT’S NOT JUST THE NSA SPYING ON YOUR CELLPHONE.

The National Security Agency isn’t the only government entity secretly collecting data from people’s cellphones. Local police are increasingly scooping it up, too.

Armed with new technologies, including mobile devices that tap into cellphone data in real time, dozens of local and state police agencies are capturing information about thousands of cellphone users at a time, whether they are targets of an investigation or not, according to public records obtained by USA TODAY and Gannett newspapers and TV stations. . . . At least 25 police departments own a Stingray, a suitcase-size device that costs as much as $400,000 and acts as a fake cell tower. The system, typically installed in a vehicle so it can be moved into any neighborhood, tricks all nearby phones into connecting to it and feeding data to police. In some states, the devices are available to any local police department via state surveillance units. The federal government funds most of the purchases, via anti-terror grants. . . . In most states, police can get many kinds of cellphone data without obtaining a warrant, which they’d need to search someone’s house or car. Privacy advocates, legislators and courts are debating the legal standards with increasing intensity as technology — and the amount of sensitive information people entrust to their devices — evolves.

We really need some sort of national debate on this. The courts have been pretty supine.