Explainer · Passkeys & FIDO
Glossary
Passkey
A login credential bound to one website.
Definition
A passkey is a FIDO2 credential: a key pair where the private key stays on the user's device or in their password manager, and the public key is stored by the website. Because it is bound to the site's domain, it cannot be used on a look-alike phishing site.
Related terms
- FIDO2Open standard behind passkeys and security keys.
- Phishing-resistant MFAAuthentication a fake site can't relay.