Can I buy something where there would be a tiny transponder sitting in the car and will come with a small remote so that when I click on the remote, the transponder will beep, letting me know the location of the car? (mechanics.stackexchange.com)
Coded Driveaway Protection — The multi-function remote is equipped with a tiny transponder which stores an electronic code transmitted by an antenna at the ignition slot. (bmwusanews.com)
These tiny transponders can be implanted into everything from dogs and cats to ferrets and rabbits, even many birds and snakes. (petbusiness.com)