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How to Use Automotive Keys Properly Automotive keys are available in a variety of styles. Some include transponder chips in their heads, and others are flat and operate mechanically by utilizing grooves on their tops and bottoms. Early car key technology was simple to duplicate, but later, manufacturers introduced an electronic chip that contained an individual "password" for your vehicle. adds an additional layer of security against theft. Transponder key A transponder or chip key is a specific key for cars that has a microchip embedded