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Locksmithing is the science and art of making and defeating locks. A lock is a mechanism that secures buildings, rooms, cabinets, or other storage facilities from theft by burglars. A key is usually used to open a lock. It is often said that "a lock keeps honest people honest."

Practitioners are called locksmiths. Locksmithing is one of the earliest forms of security engineering. Lock-picking was one of the first methods of cracking security systems.

The issue of full disclosure was first raised in the context of locksmithing.

Topics in locksmithing

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