What security feature requires users to provide a rotating six-digit code in addition to their username and password?

The security feature that requires users to provide a rotating six-digit code in addition to their username and password is multifactor authentication. This practice enhances security by requiring users to present two or more independent credentials: something they know (like a password) and something they have (like a rotating code generated by an authentication app or sent via SMS). The use of a rotating code serves as an additional layer of security, making it more difficult for unauthorized individuals to gain access, even if they have the user's password.

While two-factor authentication is a term often used interchangeably with multifactor authentication, it specifically refers to an authentication mechanism that involves exactly two factors. Multifactor authentication encompasses scenarios where more than two factors might be involved, which can include a rotating six-digit code alongside other factors. Single sign-on, on the other hand, allows users to access multiple applications with one set of login credentials, and biometric authentication refers to security measures that use physical characteristics like fingerprints or facial recognition instead of codes.