A metal key is a standard mechanical key that will turn a lock, like house key. A metal key will start a car that is NOT equipped with an immobilizer system.

A transponder key, also known as a chip key or ignition key, is a car key that contains a Radio Frequency Identification (RFID) microchip that allows the car to start

A remote head key is a key fob that is attached to the top of a physical key. It allows you to lock, unlock, and start your car without having to carry a separate key and fob.

A fobik key, or Fob Integrated Key, is a small electronic device that allows you to access your car and control some of its functions without a physical key.

A flip key, also known as a switchblade key, is a car key that folds away into a fob when not in use. Flip keys are popular for their compact, stylish look.

A smart key is a key fob that allows you to unlock, lock, and start a vehicle without inserting the key.