[eesmith]

Only for those SE cases, yes? Like, https://www.ox.ac.uk/ doesn't have passkeys because there are no user accounts there either.

It seems that Oxford people use SSO to log into a different domain entirely, and the same for applicants.

[Scott_Helme_]

No, it was more broad than just SE domains, but trying to detect whether a site is suitable for passkeys support automatically is quite the challenge. Some don't allow themselves to be crawled so require manual verification.

[eesmith]

I tried a few of the other .se domains listed. "andersnoren.se" appears to be for a single person, with no logins, but not marked so on your site.

He seems to be a WordPress developer.

And "com.se" seems to be a domain extension, like "co.uk" (https://www.ascio.com/blog/sweden-gets-a-new-domain-extensio...), except unlike the UK I can't seem to find any examples of a "*.com.se" site.

In any case, the concept of a passkey doesn't seem appropriate for "com.se".

[eesmith]

I can well believe it is a lot of effort! Just trying to figure out if Oxford had a login took a while to discover it did not - at least, not on that domain.