Blind Codes
– Blind codes require a chart or computer program for translation to a bitting code
– Key codes are mostly blind codes, and access to code books or software is restricted to licensed locksmiths
– Locksmiths may create their own blind coding systems for identification and authorization
– Blind codes are used for automotive ignition keys, such as 23N7 (General Motors) and X2100 (Nissan)
– Blind codes are also used in master keying charts to identify individual change keys and masters
Bitting Code
– The bitting code is the translated blind code used by locksmiths to cut each blank key
– The locksmith sets the code machine to the bitting code, e.g., W123 translates to 25313
– The bitting code, along with the key’s Depth and Spacing Number, determines the key’s geometry
– Each number in the bitting code corresponds to a cut on the key blade
– Experienced locksmiths can sometimes determine the bitting code from a picture of the key
References
– lockpickernetwork.wikidot.com provides information on understanding key bitting
– www.spiralbound.net discusses the copying of a Diebold key from a photo
– Diebold demonstrated how to make a voting machine key in 2007
Key Code
– Blind codes require translation to a bitting code for key cutting
– Bitting codes, along with Depth and Spacing Numbers, determine key geometry
– Blind codes are used for automotive ignition keys and master keying systems
– Locksmiths may create their own blind coding systems for identification and authorization
– Experienced locksmiths can sometimes determine the bitting code from a key pictureSources: https://en.wikipedia.org/wiki/Key_code
