What Are the Different Types of Codes and How Do They Work? Unlike older keys, modern car keys have chips that are unique to each car. This prevents thieves from simply taking the key and then starting the car. They are usually bought from a dealer or cloned by locksmiths. https://auto-locksmith84057.oblogation.com/28988095/why-is-everyone-talking-about-car-key-programmed-right-now