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How Are Car, Truck and SUV Keys Made? Typically, you can have standard car keys made at a local locksmith or dealerships. However modern smart keys and FOBs require specific equipment to program them to your vehicle. The keys have an internal transponder chip which emits an indication when the key is inserted in the ignition. This signal is sent to the immobilizer to stop the car from getting started. 1. VIN Number The VIN (Vehicle Identification Number) is an alphanumeric code with 17 characters that provides details about the vehicle.