+2 Fa, or [Two-Factor Authentication](/wiki/two_factor_authentication), is a digital guardian, adding a crucial layer of [Security](/wiki/security) beyond a single password. It demands two distinct proofs of identity, often combining what you know with what you have, to verify access.
+## See also
+- [Password](/wiki/password)
+- [Authentication](/wiki/authentication)
+- [Cybersecurity](/wiki/cybersecurity)
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