Authentication

identity verification validation

Authentication is the process of verifying the identity of a user, device, or system. It confirms that someone or something is who they claim to be.

/ɔːθɛntɪˈkeɪʃən/

It comes from the Greek word 'authentikos,' meaning genuine or authoritative.

verification validation identity proofing

security access control

multi-factor authentication biometric authentication password protection

access control security system

computer science security