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Bohmian.org - Discussion - Two-factor authentication - m
m joined January 13, 2008 (logged-in March 11, 2020) <beez> Bitching where bitching is due -- and often where it is not.
m
posted March 29, 2010
Two-factor authentication is authentication that requires two distinct methods, compared to single-factor authentication such as simply a password ("something you know"). Two-factor authentication usually uses a password in combination with unique hardware ("something you have") such as a smart card, or biometric information (sometimes referred to as "something you are"; although really this is just another instance of "something you have").
Requiring a second password, or other
remembered information in addition to an initial password is not a form of two-factor authentication.