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