Adding a
dead bolt and upgrading both the
dead bolt and lockset to higher grade alternatives can offer more security.
The application for
dead bolts includes doors constructed of wood, hollow metal, Herculite, glass with metal frame, and doors where both leaves swing open.
According to Jim Brown, security facilities manager for TRW Space and Defense Sector, "In the past, to protect against unauthorized internal access, defense contractors have used an auxiliary spin-dial locking system, which has an automatic
dead bolt and requires a two-handed operation to unlock the
dead bolt and twist the doorknob to exit.
Even with a
dead bolt, the blow shatters the doorjamb and splits the door itself (even steel doors).
It's a little device that slides under the existing
dead bolt, preventing anyone from turning it from the outside, even with a key.
The folks at Simplicikey came up with a motorized
dead bolt lock and remote key fob.
Lock and unlock the
dead bolt from your computer or phone on a moment's notice, or program it to unlock at preset times.
You can spend hundreds on a fancy "pick-proof"
dead bolt for your entry door.
You use your
dead bolt every day without giving a thought to maintenance.
For a service door, the solution is to install a good-quality
dead bolt and reinforce the doorjamb and hinges to resist a brute-force attack.
These include safety features such as indoor sprinklers, smoke detectors and
dead bolt locks.
