FCC ID is an American thing that is given to any device that emits radiowaves (i.e the remote, AKA, key FOB).
An FCC ID on a car remote or wireless key fob is the regulatory certification number used to certify the fob (remote) complies to wireless emissions standards.
Using the FCC ID, you can lookup the wireless frequency the car remote uses, the radiation you may be absorbing when pressing buttons on the remote, and other technical information about the device. FCC IDs must be on all car remotes and other wireless transmitting devices certifying they are approved for use in the USA.
The FCC ID number will be found on the back of the key FOB
Television remotes do not need FCC IDs because they use infrared light to communicate with the TV instead of the wireless spectrum.