key fob

American  

[kee fob] / ˈki ˌfɒb /

noun

1. a programmed, battery-powered device enabling keyless access or entry, especially to a vehicle, usually carried on a key ring or keychain.

   The windows and sunroof of your car can also be opened and closed using the key fob.

2. 1. an ornament or other object attached to a key ring or keychain.

      This key fob of tooled leather can hold a small photo.

   2. a key ring or keychain with such an ornament on it.

      Has anyone turned in a key fob with a little foam golf ball and three keys on it?

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Etymology

Origin of key fob

First recorded in 1910–15