What are these called?

[Hamster]

Thanks guys! By the way, what I wrote is not theoretical. It happened to someone in my family. Vehicle was stolen out of a parking lot. A couple days later, cops located the vehicle, on blocks. Apart from the tires, the only other things stolen was the garage door remote and insurance paperwork with the home address. Don't worry, the frequency for the garage door opener was changed before any thieves got a chance to use the remote.