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Automotive Locksmith Key Programming Most modern-day cars require some form of key programming. Depending on the car's maker and model, the process can be as simple as programming onboard using a spare key that works or as complicated as OBD2 or EEPROM programming. The majority of US and Asian automobile manufacturers have programming protocols that they share with auto tool makers to allow them to develop tools and hardware for locksmiths in the automotive industry to use. Transponder Chips Tr