WebAuthn, Web Authentication: An API for accessing Public Key Credentials Level 1, is a W3C Recommendation released in March 2019. It defines creation and use of strong, attested, scoped, public key-based credentials by web applications. It is very similar to the Universal 2nd Factor (U2F) standard, but extended and customized for online services.
Security devices with WebAuthn support allow you to use two-factor authentication more easily since they contain a secret key that provides a second factor only by pressing the device’s button. They can also be used as a single factor in some cases, storing your credentials for you.
We already compared the Yubico Security Key and Nitrokey FIDO U2F. In this article, we again compare the Yubico Security Key with the Nitrokey FIDO2, the successor of the Nitrokey FIDO U2F. If you need more features like support for OpenPGP, read our comparison “YubiKey 4C vs. Nitrokey Pro: Stalemate”.