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2. Padlock - Wikipedia

   en.wikipedia.org/wiki/Padlock

   A high security dual-barrel padlock. A quantitative measure of a padlock's tensile strength and resistance to forced and surreptitious entry can be determined with tests developed by organizations such as ASTM, Sold Secure (United Kingdom), CEN (Europe), and TNO (The Netherlands).

3. Smart lock - Wikipedia

   en.wikipedia.org/wiki/Smart_lock

   A smart lock is an electromechanical lock that is designed to perform locking and unlocking operations on a door when it receives a prompt via an electronic keypad, biometric sensor, access card, Bluetooth, or Wi-FI from a registered mobile device. These locks are called smart locks because they use advanced technology and Internet ...

4. 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 ...

5. Enforcer (battering ram) - Wikipedia

   en.wikipedia.org/wiki/Enforcer_(battering_ram)

   The Enforcer is a 16 kg hardened steel construction with a steel pad at the impact end so that it can absorb the impact, [2] and a handle at the opposite end angled so that the user can swing accurately at inward-opening doors without actually applying their own pressure more than necessary. [2]

6. Remote keyless system - Wikipedia

   en.wikipedia.org/wiki/Remote_keyless_system

   Remote keyless entry was patented in 1981 by Paul Lipschutz, who worked for Nieman (a supplier of security components to the car industry) and had developed a number of automotive security devices. His electrically actuated lock system could be controlled by using a handheld fob to stream infrared data.

7. Real-estate lock box - Wikipedia

   en.wikipedia.org/wiki/Real-estate_lock_box

   Lock boxes can also be used for the general storage and security of keys for the use of familial access. Traditional real estate lock boxes are secured either with a manual key, a security code, or a swipe card, [ 1 ] while newer versions operate in tandem with mobile devices, incorporating logging and remote control and configuration.