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2. 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 access by family members or other affiliated groups. Traditional real estate lock boxes are secured either with a physical key, a security code, or a swipe card, [ 1 ] while newer wireless electronic versions may operate in tandem with mobile devices, incorporating ...

3. Combination lock - Wikipedia

   en.wikipedia.org/wiki/Combination_lock

   A Wordlock letter combination lock.. A combination lock is a type of locking device in which a sequence of symbols, usually numbers, is used to open the lock. The sequence may be entered using a single rotating dial which interacts with several discs or cams, by using a set of several rotating discs with inscribed symbols which directly interact with the locking mechanism, or through an ...

4. Time-delay combination locks - Wikipedia

   en.wikipedia.org/wiki/Time-delay_combination_locks

   Modern time delay combination locks can have many functions such as multiple different codes, pre-set time lock settings (open and close times), pre-set vacation times (e.g. Christmas Day), dual code facility, and a full audit trail providing a detailed record of the lock history showing who opened the lock, when and how long it was open. [3] [4]

5. Knox Box - Wikipedia

   en.wikipedia.org/wiki/Knox_Box

   A Knox Box can cut fire losses for building owners since firefighters can enter buildings without breaking doors or windows. It can also reduce the potential of a firefighter being injured forcing entry. The disadvantage of the system is that it provides a single point of failure for the security of many buildings. If the key to a district's ...

6. Bank vault - Wikipedia

   en.wikipedia.org/wiki/Bank_vault

   To the right of the door's center are two linked boxes for the combination mechanisms and to the left is a four-movement time lock. This door has a four-point system for pressing the door into its opening (note the two stanchions left of the door opening) capable of exerting one third of the door's weight in closing force. Since this door ...

7. 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.