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Car Key Cutting Explained Cutting a car key is more than just bending a piece of metal. It is a complicated procedure that ensures security, efficiency and the longevity of keys. It is not uncommon to lose your car keys or have them break in the lock. To ensure that you can always drive your vehicle, you will need a new key cut. Transponder Keys If your car was constructed in the last 20 years, it's likely that it has transponder chips. These microchips are in the key's handle and transmit a signal to t