Explainer · Passkeys & FIDO
Glossary
FIDO2
Open standard behind passkeys and security keys.
Definition
FIDO2 is the FIDO Alliance's set of specifications, made up of the W3C's WebAuthn API and FIDO's CTAP protocol, that lets people sign in with public-key cryptography instead of passwords. Passkeys and hardware security keys are both FIDO2 credentials.
Related terms
- PasskeyA login credential bound to one website.
- Phishing-resistant MFAAuthentication a fake site can't relay.