Time-based One-time Password Algorithm

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The Time-based One-time Password Algorithm (TOTP) is a mechanism of generating a one-time password from a shared secret key and the current time, often used for two-factor authentication.

Services that Support TOTP

  • GitHub - GitHub uses TOTP for two-factor auth when signing in
  • Google - Google uses TOTP for two-factor auth when signing in
  • indieauth.com - indieauth.com used to support TOTP as a login mechanism

See Also