Ars write-up on Google Passkeys. I'm surprised to see this kind of pollyana article from them with no cautions stated whatsoever.
My concerns about passkeys (as implemented by Google) linked below. #cososec
https://arstechnica.com/information-technology/2023/05/passwordless-google-accounts-are-easier-and-more-secure-than-passwords-heres-why/
https://counter.social/@voltronic/110307923256404685