The use of two or more authentication methods to the login process, which brings an additional layer of security.

Other than a username and password, with multi-factor authentication logging in to a service will also require a piece of information that is provided exclusively to the user, such as a single-use code that’s sent directly to an email address or telephone.

Two-Factor Authentication (2FA) is the most commonly type of Multi-Factor Authentication seen in the industry.

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Multi-Factor Authentication
Definition of "Multi-Factor Authentication" by Chat GPT: Multi-Factor Authentication (MFA) is a security process that requires users to provide two or more forms of verification in order to access an account or system. This typically involves a combination of something the user knows (like a password), something they have (like a security token or mobile device), or something they are (like a fingerprint or facial recognition). MFA adds an extra layer of security beyond just a password, making it more difficult for unauthorized individuals to gain access to sensitive information or accounts.
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