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  2. Trapped-key interlocking - Wikipedia

    en.wikipedia.org/wiki/Trapped-key_interlocking

    The key will then remain trapped until the gate or door is closed. A personnel or safety key can be released from the access lock, this ensures that the gate or door can not be closed and the initial key released until this personnel or safety key is returned (assuming that no duplicate keys are available). This provides increased operator safety.

  3. Mantrap (access control) - Wikipedia

    en.wikipedia.org/wiki/Mantrap_(access_control)

    In a manual mantrap, a guard locks and unlocks each door in sequence. An intercom and/or video camera are often used to allow the guard to control the trap from a remote location. In an automatic mantrap, identification may be required for each door, sometimes even different measures for each door.

  4. Keycard lock - Wikipedia

    en.wikipedia.org/wiki/Keycard_lock

    There were 32 positions for possible hole locations, giving approximately 4.3 billion different keys. The key could easily be changed for each new guest by inserting a new key template in the lock that matched the new key. [2] In the early 1980s, the key card lock was electrified with LEDs that detected the holes. A keycard with a magnetic stripe

  5. DEA Ends Airport Gate Searches After Years of Documented ...

    www.aol.com/news/dea-ends-airport-gate-searches...

    The Justice Department Inspector General began investigating the TIP in 2024 following I.J.'s release of a video taken by an airline passenger who was detained and had his bags searched by the DEA ...

  6. Rotary combination lock - Wikipedia

    en.wikipedia.org/wiki/Rotary_combination_lock

    Many combination locks have three wheels, but the lock may be equipped with additional wheels, each with a drive pin and fly, in a similar manner. The number of wheels in the mechanism determines the number of specific dial positions that must be entered to open the lock, so a three-sequence combination is required for a three-wheel lock.

  7. Arrow lock - Wikipedia

    en.wikipedia.org/wiki/Arrow_lock

    An arrow lock is metal and rectangular, measuring 2.005 in × 3.566 in × 0.620 in (50.9 mm × 90.6 mm × 15.7 mm) with a keyhole in the center. [2] When the user turns the key, a metal bar that normally protrudes from one side is moved through the lock to the other side.

  8. 5 giveaways that signal to burglars you're not at home - AOL

    www.aol.com/lifestyle/5-dead-giveaways...

    Burglars don't want to get caught, which is why they usually wait until you're out of your house before they break in. Who's tipping them off that you're out of town and your house is a sitting duck?

  9. Key retainer - Wikipedia

    en.wikipedia.org/wiki/Key_retainer

    A key retainer device (KRD) is a small metal unit that is wall or door mounted, usually designed for the interchangeable core that retains one key (Key A) while the second key (Key B) is used for authorized purposes. When the key in use (Key B) is returned into the key retainer, the key held captive (Key A) is turned and then can be released.