rekeying locks 3
https://ace-wiki.win/index.php/Why_a_Trusted_Mobile_Locksmith_Near_You_Makes_All_the_Difference
Rekeying locks is a practical way to change your home's security without replacing the entire hardware. A locksmith reconfigures the lock's internal pins and springs so that your old key no longer works, and a new one does. This is perfect if you've lost a key, moved into a new place, or just want to keep a spare key from becoming a risk. It's cheaper and less intrusive than swapping out locks, and you can often keep the same handles and deadbolts you already have.