especially : a small electronic device used typically in place of a key (as to unlock a door or start a vehicle) or to remotely initiate the action of another device (such as a garage door)

Aug 5, 2024 · What Is a Key Fob? A key fob is a small hardware device that can be programmed to control access to a physical space. Cars, privately owned buildings and restricted spaces are …

Oct 22, 2025 · It’s a question many drivers have: what does the fob in a key fob stand for? Contrary to popular belief, it’s not an acronym. The word “fob” actually refers to an old term for a small decorative …

Sep 21, 2021 · What is a key fob? A key fob is a small, programmable device that provides access to a physical object.

Apr 5, 2025 · Of course, a key fob is actually a sophisticated electronic device that allows you to remotely perform certain functions that your car key would typically accomplish, such as locking and...

KEY FOB definition: a programmed, battery-powered device enabling keyless access or entry, especially to a vehicle, usually carried on a key ring or keychain. See examples of key fob used in a …

an electronic device connected to a key that is used to lock and unlock a car's doors or operate a piece of equipment:

3 days ago · The term “key fob” refers to a compact electronic security device that contains built-in authentication for controlling access to a vehicle or property. It functions as a miniature radio …

Dec 3, 2025 · A key fob is a small device that lets you control something without using a regular key. Today, most people use a key fob to lock or unlock a car, open a garage door, or get into a building …

1. A small object fastened to a key chain or key ring and designed to be comfortably grasped. 2. Such an object containing a remote-control device, as one that locks and unlocks a car.