2FA or Two Factor Authentication

Two-factor authentication or 2FA is a security system that requires two different forms of identification to verify the identity of a user.

In simpler terms, it requires the user to provide two additional layers of authentication after providing their username and password. Two-factor authentication is commonly used for online transactions, access control systems, and online banking systems.

The first factor is often something that the user knows, such as a password, PIN or answers to secur