Mobile device multifactor authentication (MFA) is a method of verifying a user’s identity by requiring two or more factors, such as something the user knows (e.g., password, PIN, security question), something the user has (e.g., smartphone, OTP app, security key), or something the user is (e.g., fingerprint, face, iris)12. The combination of fingerprint and password meets the requirements for mobile device MFA because it uses two different factors: something the user is (fingerprint) and something the user knows (password). The other combinations do not meet the requirements because they use only one factor: something the user knows (password or PIN) or something the user does (swipe).
References1: Set up the Microsoft Authenticator app as your verification method2: What is Multi-Factor Authentication (MFA)? | OneLogin
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