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Automotive Locksmith Key Programming Modern cars require some type of key programming. Based on the model and manufacturer, the process may be as simple as using a spare key to program the onboard computer or as complex as EEPROM or OBD2 programming. The majority of US and Asian car makers share their programming protocols with auto tool manufacturers to allow them to develop tools and hardware for locksmiths working in automotive vehicles. Transponder Chips Most modern cars are equipped with transponder chips to stop c