Our re-key lock service is the smart move - Eddie and Sons Locksmith - Brooklyn, NY Do you know how re-keying service is a better option than new locks installation under specific circumstances? Rekeying won’t be of any help if your lock is damaged or broken. The rekeying formula has been introduced to cater specific situation where door lock keys have been stolen or lost. We will make your privacy and security authentic by altering lock mechanism. In this way, the genuine keys will prove to be waste material for whoever has them.