Lock rekeying is when a locksmiths takes apart a lock and puts it back together so that it will no longer work with the old key.
The teeth of a key are like a code. They match up to the same code as the tumbler inside the lock.

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When we rekey a lock, we change the code that the tumbler will accept. When the old key tries to enter a lock, it no longer has the right code to open it. This same method can be used to change locks so they all open to the same key.

Our automotive locksmiths can rekey ignitions, although this type of rekeying isn’t associated with rekeying but it works in the same way as a building lock. You can learn more about ignition work on our automotive locksmith page.