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Biography
Wiktionary|tokenTOC rightA token is an object of value (ethics)|value , and may refer to:
Token coin , a piece of metal or other composition used as a substitute for currency; includes subway tokens
Casino token
Other items that are part of exonumia
Tokenism , the inclusion of a single person (or very few people) of a group so an organization can publicly claim to be inclusive
Knight's token , carried by a medieval knight
Wedding token , wedding paraphernalia also known as an arrhae or wedding coin
Game piece (board game)|Game piece or counter used in a game
Book token, a (branded) voucher or gift card redeemable for books
Token (railway signalling) , a physical object given to a locomotive driver to authorize him to use a particular stretch of single railway track
Popular culture
Token Black , the only African American child in the South Park television series
The Tokens , vocal music group
Computing
There are two classes of meaning of 'token' in computing:
An object which represents the (often exclusive) right to perform some operation:
* Petri net|Token (Petri Net) , an object used in Petri net theory
* Session token , a unique identifier which is generated and sent from a server to a software client to identify an interaction session and which the client usually stores as an HTTP cookie
* Security token (also known as a hardware token, authentication token or cryptographic token), a physical device that an authorized user of computer services is given to aid in authentication
* Access token , a system object representing the subject of access control operations
* Token ring , a local area network technology in which a virtual object known as a token is passed between devices on the network, authorizing them to communicate
* invitation system|Invitation token , sometimes called a "code", sometimes used as a method of curbing website registration for a number of purposes
An atomic object in parsing:
* Token (parser) , usually a word or other atomic parse element
* Tokenizing , the operation of splitting a string of characters into a set of tokens in lexical analysis
Other
Type-token distinction|Token (type) , an instance of a type in logic, computational linguistics, and information retrieval
