cross-posted from: https://infosec.pub/post/47704273
SignalTrace “links devices that regularly travel together, correlating them to license plate.” It is a surveillance product that will sweep up and add all sorts of Bluetooth and other data to license plate readers, linking specific devices—and people—to cars.
No expectation of privacy in public is the general basis. Seems like passing "reasonable expectation of privacy from government agents, private and public, in public spaces" as an extension of the 4th amendment would be nice