Federated identity  

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In information technology, federated identity has two general meanings:

  • The virtual reunion, or assembled identity, of a person's user information (or principal), stored across multiple distinct identity management systems. Data are joined together by use of the common token, usually the user name.
  • A user's authentication process across multiple IT systems or even organizations.

For example, a traveler could be a flight passenger as well as a hotel guest. If the airline and the hotel use a federated identity management system, this means that they have a contracted mutual trust in each other's authentication of the user. The traveler could identify him/herself once as a customer for booking the flight and this identity can be carried over to be used for the reservation of a hotel room.

Unless indicated otherwise, the text in this article is either based on Wikipedia article "Federated identity" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on research by Jahsonic and friends. See Art and Popular Culture's copyright notice.

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