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The Masterkey is a door breaching shotgun system manufactured by Knight's Armament Company. The Masterkey project was initiated during the 1980s to provide assault rifles with a potent built-in door breaching tool. Individual soldiers were often forced to carry a breaching shotgun in addition to their standard-issue rifle, but the Masterkey ...
Each door will have different wards and can only be opened by the correctly warded key or the master key. A skeleton key has the warded section of the key removed so that it opens all the doors of a system. Some applications, such as a building with multiple entrance doors, have numerous locks that are keyed alike; one key will open every door.
KYK-13 on display at the National Cryptologic Museum.. The KYK-13 Electronic Transfer Device is a common fill device designed by the United States National Security Agency for the transfer and loading of cryptographic keys with their corresponding check word.
A US Marine practices shotgun door-breaching techniques. A breaching round or slug-shot is a shotgun shell specially made for door breaching.It is typically fired at a range of 6 inches (15 cm) or less, aimed at the hinges or the area between the doorknob and lock and doorjamb, and is designed to destroy the object it hits and then disperse into a relatively harmless powder.
An access badge is a credential used to gain entry to an area having automated access control entry points. Entry points may be doors, turnstiles, parking gates or other barriers. Access badges use various technologies to identify the holder of the badge to an access control system.
A far more secure (and more expensive) system has two cylinders in each lock, one for the change key and one for the master key. Master keyed lock systems generally reduce overall security. [2] The fact that some pin chambers have two shear points allows for more options when picking and it also allows for more keys to operate.
Keycard systems operate by physically moving detainers in the locking mechanism with the insertion of the card, by shining LEDs through a pattern of holes in the card and detecting the result, by swiping or inserting a magnetic stripe card, or in the case of RFID or NFC cards, merely being brought into close proximity to a sensor.
The system consists of a bullet-trap tail section which slides over the muzzle of the rifle, an explosive midsection and a front standoff rod. The grenade is propelled by a normal ball or tracer round to a maximum range of 30 m (98 ft) and is detonated by the impact of the standoff rod against the door to be breached, the standoff distance allowing the blast wave to affect as much of the door ...