@agates @brianoflondon I don't know if there is a connection between DIDs and webauthn/passkeys. They are different standards.
In Fediverse we are building a key-based identity system, where identities will be represented as DIDs, including did:key DIDs, but not limited to this particular identifier type.
https://codeberg.org/fediverse/fep/src/branch/main/fep/ef61/fep-ef61.md