So passkeys had a few moments in the media spotlight (in the UK) this week. I thought I'd revisit them to test them again. For those who know the technology well, is there any mechanism for handling cross-device flows where bluetooth is unavailable? I can see it's meant to help with proximity checking... but I can't see a way to make it work without bluetooth in my (limited) tests. Second, how can we make it work on a single machine with multiple browsers? e.g., Chromium and Firefox both installed, potentially with multiple profiles. A crude method is to install whichever FIDO2 authenticator/sync service on every ... single ... browser ... Better would be a cross-application flow on a single device. Anyone able to point me to means of handling those use cases? #passkeys