authentication

Proof that you are the correct user, needed to enter an account, network, or system.

• The website requires authentication.
• Fingerprint authentication lets you unlock your phone.
• Two-factor authentication adds another check when you sign in.

Similar words: identity verification

Common phrases: user authentication, two-factor authentication, authentication code

Checking or proving that something is real, genuine, or officially valid.

• The document requires authentication.
• Experts completed the authentication of the signature.
• The museum requested authentication before buying the painting.

How to use it: authentication of something (Authentication of the painting took several weeks.)

Similar words: verification, validation

Common phrases: document authentication, authentication of something, require authentication