@whitequark @glyph @emma @mcc One thing that might make passkeys viable even for people who can't store them is if the system admits brainwallet style passkeys (i.e. derived with KDF from a passphrase). I'm not sure if this is possible and kinda doubt it, since there's PKI involved and they're probably signed by the other party. But maybe tooling could be made to store the public part in content-addressed storage, addressed by public key...