The vertical deadbolt lock eliminated a horizontal bolt, concentrating on the hinge principle. A deadbolt can therefore make a door more resistant to entry without the correct key. There is a single deadbolt on the inside of the door. Any amount of force capable of defeating a deadbolt will also defeat a door chain. A variant of the standard deadbolt is the vertical deadbolt, invented by Samuel Segal. Deadbolt is a robot that is Miranda Grey's sidekick. Deadbolt is a rock band from San Diego, California, U.S. "Deadbolt" appears on "Guitar Hero 5". A producer from the studio that produced Neil's latest movie "Deadbolt".