uncontrolled cross keying

  n.
   a condition in which two or more different keys under different higher level keys operate one cylinder by design; e.g., XAA1 operated by AB, AB1. Note: This condition severely limits the security of the cylinder and the maximum expansion of the system, and often leads to key interchange

Locksmith dictionary . 2014.

Look at other dictionaries:

  • cross keying —   n.    the deliberate process of combinating a cylinder (usually in a master key system) to two or more different keys which would not normally be expected to operate it together. See also controlled cross keying and uncontrolled cross keying …   Locksmith dictionary

  • Smart grid — Public infrastructure …   Wikipedia

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