The smart alternative to master keying. Kwikset's key control deadbolt, featuring SmartKey re-key technology, is a revolutionary cost and time-saving alternative to master keying. Re-keying a traditional master key system is labor intensive, time consuming and costly. With the first and only two-cylinder key control deadbolt, either cylinder can be re-keyed in seconds, without removing the lock from the door. Retain your one-key access to all units and gain more flexible key management, all while saving time and money. The new key control deadbolt is the perfect alternative to master keying.