There are several lock type options available for safes. Electronic safes usually open faster than other lock options. Biometric safes use an optical scanner to analyze fingerprints. Combination locks can be digital or manual and require a numerical code to open the lock. Keyed locks require a key to open the lock, similar to a door lock. Within Wall Safes & Floor Safes, lock types include Electronic, Biometric, Keyed and Combination. Check out our most reviewed product, the 0.58 cu. ft. Wall Safe with Electronic Lock, Beige.