A proximity key, also called a smart key, keyless access, or intelligent key, is an electronic key that allows for keyless entry and ignition of a vehicle. It utilizes radio frequency identification (RFID) technology to communicate with the car's onboard computer system. This proximity key is known by various names because car manufacturers use different terminology to refer to this advanced key technology. Regardless of the term, the function remains the same - providing convenient and secure vehicle access without needing a traditional mechanical key