Multi factor authentication, also known as two factor authentication or 2FA, is a security measure that requires users to provide multiple pieces of evidence or credentials in order to verify their identity and access certain accounts or systems.

This type of authentication is becoming increasingly necessary in the digital age as cyber threats continue to evolve and traditional passwords become easier to hack.

By combining multiple factors, such as something a user knows (e.g. a password), something a user has (e.g. a phone or security token), and something a user is (e.g. a fingerprint or facial recognition), multi factor authentication significantly improves the security of online accounts and systems.

While it may seem inconvenient to require multiple steps to verify identity, the benefits of multi factor authentication far outweigh the potential drawbacks.

This type of authentication helps to prevent unauthorized access, reduce the risk of identity theft, and increase overall security for individuals and organizations.