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  2. Master keying - Wikipedia

    en.wikipedia.org/wiki/Master_keying

    A master key operates a set of several locks. Usually, there is nothing different about the key. The differences are in the locks the key will operate. These master-keyed locks are configured to operate with two, or more, different keys: one specific to each lock (the change key), which cannot operate any of the others in the set, and the ...

  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. Master Lock - Wikipedia

    en.wikipedia.org/wiki/Master_Lock

    Master Lock is an American company that sells padlocks, combination locks, safes, and related security products. Now a subsidiary of Fortune Brands Innovations , Master Lock Company LLC was formed in 1921 by locksmith -inventor Harry Soref and is headquartered in Oak Creek, Wisconsin .

  5. Knox Box - Wikipedia

    en.wikipedia.org/wiki/Knox_Box

    The keys for Knox KeySecure are the same throughout a district (the extent of which depends on the district). At the February 2013 RSA Conference, a researcher publicized a possible exploit, claiming that he had successfully ordered a box, disassembled it, and used the information from disassembling the lock cylinder to create his own master ...

  6. Travel Sentry - Wikipedia

    en.wikipedia.org/wiki/Travel_Sentry

    The first locks manufactured to the Travel Sentry Approved standards went on sale on November 12, 2003. Initially, only key and combination padlocks were manufactured using this standard. In 2004, the first luggage with integrated Travel Sentry locks were introduced. As of 2019 there are over 500 million Travel Sentry locks and luggage in ...

  7. Locksmithing - Wikipedia

    en.wikipedia.org/wiki/Locksmithing

    Harry Soref founded the Master Lock Company in 1921 and patented an improved padlock in 1924 with a patent lock casing constructed out of laminated steel. Linus Yale Sr. invented a pin tumbler lock in 1848. Linus Yale Jr. improved upon his father's lock in 1861, using a smaller, flat key with serrated edges that is the basis of modern pin ...

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