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How to Use Automotive Keys Properly Automotive keys come in various styles. Some keys come with transponder chips incorporated into their heads. Others are flat and function mechanically through grooves on tops and bottoms. Car keys of the past were simple to duplicate, but later, manufacturers added a chip that stored a unique "password" for your car. This provides an additional layer of security against theft. Transponder key A chip key or transponder is a special key for cars with a microchip embedded within its head. This technology
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