Authentication factors

There are different authentication factors that range from something you know, for example a password, to something you are using, for example an iris scanner. The following are the different authentication factors:

  • Multifactor authentication: These factors are grouped into different types and the number of factors is the number of different groups being used. For example, if you have a smart card, this is something you have and the PIN is something you know; this means it is dual factor, but the smart card and PIN is also known as multifactor. Multifactor could also be more than two different factors—it just means multiple factors.
  • Something you know: This would be a username, password, PIN, or your birth date; ...

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