Concept · Cloud, hosting and security

Multi-factor authentication

Also called: MFA, 2FA, two-factor, two-factor authentication, two factor, two-step verification, authenticator app, verification code

A sign-in that asks for more than one kind of proof, drawn from something a person knows, something a person has and something a person is. With two proofs it is called two-factor authentication, or 2FA.

For example: A founder types a password and then a six-digit code from a phone app. A thief who has only the password cannot sign in.

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