Token (railway signalling), a physical object given to a locomotive driver to authorize him to use a particular stretch of single railway track
Token coin, a piece of metal or other composition used as a substitute for currency; includes subway tokens
Tokenism, the inclusion of a single person (or very few people) of a group so an organization can publicly claim to be inclusive
Token character, a supporting character in a story who has no real relevance to the plot but is included to conform to expected standards, such as featuring ethnic minorities in a cast of a predominantly other ethnicity.
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 tokens, sometimes called "codes", 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
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