Google != passkeys. Google may allow multiple keys, but that is outside of what FIDO specifies for passkeys. Here's a source saying that passkeys expect one and

Google != passkeys. Google may allow multiple keys, but that is outside of what FIDO specifies for passkeys. Here's a source saying that passkeys expect one and only one key: https://auth0.com/blog/our-take-on-passkeys/ https://auth0.com/blog/our-take-on-passkeys/ "Passkeys are designed to [...] allow the FIDO credential to roam across multiple devices. This [means that there's ] no need to repeat enrollment on each device [.]" > If a website is dumb enough that they only allow a single passkey per account And that's exactly my point.