When you take your car in for an oil change, you expect them to suggest rotating your tires as well; you generally don't expect to find an FBI GPS tracking device magnetically clinging to the chassis. That's just what California student Yasir Afifi discovered, however, and after a friend posted images of the device on Reddit he had a visit from a half-dozen FBI investigators wanting their gadget back. According to them, if he didn't hand the tracker over - which a friend had suggested selling, attaching to another, random car, or even throwing into a lake - they were "going to make this much more difficult for you if you don’t cooperate."
Afifi unsurprisingly gave them the tracker, though he believes they'd been following him for some time. One of the FBI agents apparently intimated they knew which restaurants he and his girlfriend had been frequenting, as well as complimenting him on his recent change in employment.
"We have all the information we needed," were their parting words, "you don't need to call your lawyer. Don't worry, you're boring." However, the ACLU plan to use the case to challenge recent rulings that allow law enforcement to place tracking devices without requiring a warrant.