What is Multi-factor Authentication?

Multi-factor authentication or MFA (also known as Two-factor authentication or 2FA, along with similar terms) is an electronic authentication method, in which a user is granted access to a website or application only after successfully presenting two or more pieces of evidence (or factors) to an authentication mechanism such as:

• Knowledge : something only the user knows.
• Possession : something only the user has.
• Inherence : something the user is.

MFA protects the user from an unknown person trying to access their data such as personal ID details or financial assets.

“A third-party authenticator (TPA) app enables two-factor authentication, usually…