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...nt used to manipulate the pins, levers or wafers inside a lock without the key. anatomy of a lock, anatomy of a key, specific to lock picking, specific to lock sport, specific to locksmithing

; Change key : A key that opens one lock or a group of keyed-alike locks in a given keying syste

...f master keying can have a dramatic effect on the number of real [[Differs|key differs]] and resistance to various forms of [[covert entry]], such as [[lo == Master Key Lock Designs ==

.... It also has a patented key control system that provides a high number of key and sidebar [[differs]](expired 2014). ...ar on the springs. In total, there are 531,441 (9⁶) theoretical key differs for the pin-tumbler portion of the lock.

...dependent Lock Company (ILCO), a company originally dedicated to supplying key blanks, absorbed the Lockwood Manufacturing Company in December of 1931 or ...with urgently supplying its government with large quantities of “security key system locks” for the base in Oak Ridge, TN where the project was taking

...reeze</ref> PACLOCK padlocks also support SFIC, LFIC, KIK/KIL (Key-in-Knob/Key-in-Lever), and their proprietary UCS (Universal Cylinder System). The "gove ...ey, or a master key can be used to open all locks. Finally, a Grand-Master key allows for a sub-system of Master Keys over your locks." <ref>https://www.p

...wn as a "Control Key" or "Interchange Key". This key functions as a normal key would, but it unlocks the holding mechanism for the core, allowing it to sl The addition of an extra one or more pins controlled by the control key leave at least one extra possible correct position for the lock. Making it