https://yamcode.com/15-present....s-for-your-car-keys-
https://anotepad.com/notes/mgic6iq8
What Are the Different Types of Codes and How Do They Work? Unlike older keys, modern car keys are equipped with specific chips that are unique to each vehicle. prevents thieves from simply taking the key and putting it in the car. These keys can be purchased at a dealership or cloned in a locksmith's shop. The procedure for programming the key varies by manufacturer and involves turning the key to the off position without starting the engine, and then removing it