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Laser Cut Key For Cars To combat theft, keys for cars now include improved locking mechanisms. Most modern cars use either laser cut or transponder keys that must be programmed to work with the vehicle's system. Traditional cut keys have a simple design on their edges, which makes them simple for locksmiths to create copies and for thieves to slip into your lock. Mechanical Keys Mechanical keys are traditional physical devices that work with the lock cylinders of a car's door and ignition locks. They aren't electronic and