Most states have laws that require car owners to ensure their license plates remain visible and clear of obstructions. In practicality, that can be cumbersome. Trailers, trailer hitches, bike racks and other ordinary vehicle equipment can often restrict that view.
The proliferation of automated license plate readers in police departments around the country has increased dramatically over the years, leading the American Civil Liberties Union to commission a report to find out what they are being used for, the policies governing their use and how they should be used to benefit the American public. The report, which has just been released, is called You Are Being Tracked. The report's findings, according to the ACLU, show that plate readers are not being use
So, now that we know it is legal for the FBI to place GPS trackers on cars without a warrant, the next logical question is, how often does it happen? We can't say for sure, but the recent experience of 20-year-old U.S. student Yasir Afifi leads us to believe it's taking place more often that we'd like to think.