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Types of Keys For Trucks In the late 90's to mid-2000's manufacturers began to put a chip transponder in the plastic head on their keys. This chip emits an electronic signal that is picked up by the receiver inside your ignition. If the code does not match your car's code, it won't start. These are often referred to as "chip keys." Beishir can produce these for you at just a fraction of the cost of dealers. Transponder Keys A transponder, also called an immobilizer or chip key,