Yeah, I was only talking about differences for backup.
As long as no attestation is used, you only have to store the private key, credentialId and userHandle (basically the server generated ids of the passkey and the user). That's not to different to writing down username and password.
As long as no attestation is used, you only have to store the private key, credentialId and userHandle (basically the server generated ids of the passkey and the user). That's not to different to writing down username and password.