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2. Lever tumbler lock - Wikipedia

   en.wikipedia.org/wiki/Lever_tumbler_lock

   Higher security lever locks (such as the five-lever) usually have notches cut into the levers. These catch the locking bolt and prevent it from moving if picking is attempted (similar to the security pins in a pin tumbler lock). The Chubb detector lock is a variation of the lever lock which was designed to detect and prevent picking attempts.

3. BiLock - Wikipedia

   en.wikipedia.org/wiki/BiLock

   Bilock is a high-security keying system designed and manufactured by Australian Lock Company. It is advertised to be bump-proof, pick-resistant, and drill-resistant. The Bilock cylinder uses a patented locking system with two sidebars, 12 pins, and 12 springs.

4. Pin tumbler lock - Wikipedia

   en.wikipedia.org/wiki/Pin_tumbler_lock

   In a master-keyed lock, some or all of the pin chambers in the lock have three pins in them instead of two. Between the driver pin and the key pin is a third pin called the spacer pin, also known as a master wafer. Thus each pin line has two shear points, one where the driver and spacer pins meet, and one where the spacer and key pins meet. So ...

5. Roller shutter - Wikipedia

   en.wikipedia.org/wiki/Roller_shutter

   Security roller shutters in a dead mall. A roller shutter, security shutter, coiling door, roller door or sectional overhead door is a specialized type of door or window shutter consisting of multiple horizontal slats, bars, or web systems interconnected through hinges. The mechanism involves lifting the door to open it and lowering it to close.

6. Door security - Wikipedia

   en.wikipedia.org/wiki/Door_security

   A metal doorframe with a strike plate built in: in other doors this would be a metal strikeplate in a wooden doorframe. The term door security or door security gate may refer to any of a range of measures used to strengthen doors against door breaching, ram-raiding and lock picking, and prevent crimes such as burglary and home invasions. Door ...

7. Napco Security Technologies - Wikipedia

   en.wikipedia.org/wiki/Napco_Security_Technologies

   The company specializes in security systems, including alarm locks and continental access. Their product offerings encompass Gemini and the latest F64-Series hardwire/wireless intrusion systems, iSee Video internet video solutions, Trilogy standalone electronic PIN/Proxy access locks, as well as Marks USA's i-Que lock and Hi-Security cylinder ...