But passkeys aren’t a new thing. It’s just a new name starting to be used for WebAuthn/FIDO2 credentials that enable fully passwordless experiences. These types of credentials are also called discoverable credentials, or sometimes resident credentials.
We like the new term and will use it, because it helps people understand they’re a password replacement with a simple term. “Passkey” is much more understandable by most people than “discoverable WebAuthn/FIDO credential.”
Passkey is a term that the industry is rallying around for FIDO credentials that can fully replace, rather than only augment, passwords. These are called resident or discoverable credentials in the specs. We think “passkey” is a better term than “discoverable webauthn/fido credential,” because it evokes its ability to replace passwords in an accessible way.
Passkeys in YubiKeys have been supported since discoverable credentials were added in the WebAuthn/FIDO standards around 2018. However, it’s important to note that passkeys in YubiKeys are not copyable, meaning the passkey is bound to the YubiKey. 
