Biometric authentication is a security process that relies on the unique biological characteristics of an individual to verify that he is who is says he is. Biometric authentication is one of the categories in a multi-factor system.
Multi-factor authentication (MFA) is a security system that requires more than one method of authentication from independent categories of credentials to verify the user's identity for a login or other transaction.
Multi-factor refers to the use of multiple methods of authentication to verify a user's identity. These methods are typically independent of each other and fall into different categories: something you know, have, or are.
A password is a secret word or phrase that must be used to gain admission to something. In cybersecurity, it is often one method of authentication in a multi-factor system.
In cybersecurity, a token is a small hardware device that the owner carries to authorize access to a network service. The token is used in addition to or in place of a password to prove that the customer is who they claim to be.
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