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What is Key Impressioning

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Impressioning is a non-destructive, covert method of creating a working key for a lock without picking or disassembly. Impressioning is one of the most useful skills in locksmithing, and is divided between copying and manipulation techniques. Copying focuses on making negative-image molds of a source key, while manipulation uses various techniques to determine the proper heights of internal components. Impressioning via manipulation is closely related to decoding.

Impressioning has been long used to obtain a working key for a lock by locksmiths, locksport enthusiasts, and criminals. Many high profile crimes have been accomplished through the use of impressioning techniques. Techniques of impressioning have been applied to forensic investigations to aid in serial number recovery and tool mark identification.


Edited by rain

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