Rekeying your locks is usually a matter of security. If you just moved in, if a roommate moved out, bottom line… if you don’t trust someone who might have had access to your keys then it is strongly advised to take the necessary security precautions and change your keys. This is a much simpler option and most homeowners will never cycle through the possible key-lock combinations. Businesses have higher turnover and larger populations passing through so running out of unused combinations can occur after many years. Rochester homeowners can rest assured that a simple call to Speed Locksmith Rochester NY will fix the matter of which keys can open the door to your home.