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2. Electromagnetic lock - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_lock

   An improved "shear" electromagnetic lock was patented on May 2, 1989, by Arthur, Richard and David Geringer of Security Door Controls, an access control hardware manufacturing firm. The device outlined in their designs was the same in principle as the modern magnetic lock consisting of an electromagnet and an armature plate.

3. National Safeman's Organization - Wikipedia

   en.wikipedia.org/wiki/National_Safeman's...

   Registered Safe Technicians are eligible to test for this title. They must demonstrate knowledge of tools and techniques, dial-to-lock identification, round doors, square doors, and fire safes. Passing this test is a prerequisite for taking the tests to become a Certified Master Safecracker.

4. Safe - Wikipedia

   en.wikipedia.org/wiki/Safe

   Small safes may be fixed to a wall to prevent the entire safe being removed, without concealment. Very small secure enclosures known as key safes, opened by entering a combination, are attached to the wall of a building to store the keys allowing access, so that they are available only to a person knowing the combination, typically for holiday ...

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   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

6. Electronic lock - Wikipedia

   en.wikipedia.org/wiki/Electronic_lock

   In the US, UL rated doors must retain their rating: in new construction doors are cored and then rated. but in retrofits, the doors must be re-rated. Electrified exit hardware, sometimes called "panic hardware" or "crash bars", are used in fire exit applications. A person wishing to exit pushes against the bar to open the door, making it the ...

7. Door furniture - Wikipedia

   en.wikipedia.org/wiki/Door_furniture

   Design of door furniture is an issue to disabled persons who might have difficulty opening or using some kinds of door, and to specialists in interior design as well as those usability professionals which often take their didactic examples from door furniture design and use. [1] Items of door furniture fall into several categories, described below.