A key fob is a compact device configured to grant access to a physical object, such as a car, network service, mobile device, restricted resources, or computer system. It is programmed to provide one-factor authentication, allowing access to a system or device without a real key.

Key Fob’s Working Mechanism

Examples of Key Fob Uses

Key Fobs and Authentication

Key fobs can be used as authentication devices in two-factor or multi-factor authentication to protect devices, applications, networks, or data.