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Home Computing Terms Two-Factor Authentication
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Two-Factor Authentication

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Two-factor authentication (2FA), is an enhanced security mechanism that requires a computer user to have not just one, but two items in order to authenticate (sign-in).

  1. The first item is something you know, such as your typical password.
  2. The second item is something you have, such as a physical cell phone that an access code may sent to, or your fingerprint.

One of the most common types of two-factor authentication is found with ATM machines, requiring you to have your PIN, something you know, and your bank card, something you have.

 
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