Transponder keys were developed during World War II for fighter planes and the word is derived from the combination of transmitter + responder. Transponder keys are specially designed handheld keys that transmit a radio signal to the vehicle’s remote receiver and used to unlock and start vehicles. The vehicle’s motor-receiver reads this special radio frequency with a designated, distinct digital identity code to lock or unlock the vehicle and it also starts the vehicle’s ignition system. The type of transponder keys used in vehicles is called magnetic coupled transponder systems. Magnetic coupled transponder systems do not require constant electricity or … Read more