A key fob is a small handheld device that provides access to a physical object, such as a car, computer system, restricted area or room, mobile device, network service, or other kind of keyless entry system. It is a small security hardware device with built-in authentication used to control and secure access to mobile devices, computer systems, network services, and data. Key fobs are a type of physical security token that provides on-device, one-factor authentication to facilitate access to a system or device.
Key fobs use radio signals to communicate with the locking system of the car and perform various functions. When a button on the key fob is pressed, it sends a radio signal with a code to a receiver in the car, which detects and interprets the code from the key fob, allowing it to perform the requested action, such as locking or unlocking the doors.
In summary, a key fob is a small handheld device that provides access to a physical object and uses radio signals to communicate with the locking system of the object to perform various functions.
