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Automotive Locksmith Key Programming Most modern-day cars require some type of key programming. Depending on your vehicle's model and manufacturer the procedure could be as simple as using a spare key to program the onboard computer, or as complicated as EEPROM or OBD2 programming. Most US and Asian automobile manufacturers have programming protocols that they share with auto tool makers to allow them to develop tools and hardware for automotive locksmiths to use. Transponder Chips Most newer cars use what are called tr