Two-factor authentication: Difference between revisions

Revision as of 00:04, 1 October 2005

Revision as of 15:44, 6 October 2005

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'''Two-factor authentication''' (T-FA) is anany [[authentication]] [[protocol]] that requires two forms of authentication to access a system. This contrasts with traditional [[password]] authentication, which requires that a user only know a password to gain access to a system.

Using more than one factor of authentication can also be called '''''strong authentication'''''; using just one factor, for example just a password, is considered '''''weak authentication'''''.