I was hanging out with my cousin's girlfriend, and next thing you know she gets a notification on her phone, which is how we found out, because it told us. It says first seen at 7:34, so that's when they put it on my car. Then it said 'Play Sound,' which is what we did...and this is how we were able to detect where it was at on my car.
The implications of this are terrifying. This is not ok.
(here comes the sarcastic comment)
Unless we're talking about the license plate in general. Which is also a tracking device.