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• In lexical analysis, a token is an atomic element within a string. See Token (parser). To tokenize is to replace systematically some more complex string by such a token.
• A token may also be a piece of metal or other compostion item used as a substitute for currency; see also Exonumia or casino token.
• In business or politics, a token can be a single person of a disadvantaged group hired very publicly so the organization can claim to be inclusive or representative. In South Park, Token Williams is the only black child on the show.
• On railways, a token is a physical object given to a locomotive driver to authorize him to use a particular stretch of single track.
• In computing, a token is a virtual object that is passed between computers or other devices on a network and similarly authorizes them to communicate. Only the device with the token may communicate, to avoid clashing with other devices.
• In the Windows NTMicrosoft Windows NT is an operating system produced by Microsoft Corporation. It is the ancestor of their current flagship Windows XP. Development When development started in 1988, Windows NT was to be known as OS/2 3. 0, the third version of the operati family of operating systems, a tokenIn the Windows NT architecture, a token is a system object (type name "Token") representing the subject in access control operations, i. the active part (the passive part being the object being accessed). Token objects are usually built by the logon servi is a system object representing the subject of access control operations.