Deadbolt provides additional security compared to a standard spring bolt lock. Deadbolts are called "dead" bolts because they do not contain any springs. Instead of using springs to operate the locking mechanism, deadbolts use a solid metal bolt that slides into the door frame or into a special strike plate installed on the frame. This bolt is typically activated using a key or a thumb turn on the interior side of the door.

Because the deadbolt requires physical action to be locked or unlocked, it is much more resistant to forced entry than a spring bolt lock.
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