Transponder car key

A transponder car key is a special type of key that helps start your car. It may look like any other key, but it has a special chip inside that communicates with your car's computer. When you turn your key, the chip sends a signal to your car, which acts like a secret password. When your car gets the right password from your key, it unlocks the ignition and allows the engine to start. This makes sure that only someone with the right key can start your car and prevents unauthorized people from stealing it.