I just stumbled upon this article from Sep 2019:
It includes an announcement of a “Unity Authentication” system that would serve as a federated authentication provider, which sounds promising. The ETA for a beta version was stated as “later this year”. Now, one year later I was trying to find some infos about this technology, assuming it was already in production, but couldn’t find any. Is it still in beta stage?
Did you visit the asset store page from that blog article?
It looks like it is up to v1.1.0
Caveat: I have NOT tried it myself at all.
Further caveat: looks like it only got 2/5 stars… another fellow claims to have fixed it:
And now the asset store is completely unusable (broken external browser linkage crap) in Unity2020… yay!
@Kurt-Dekker Yes, I have seen that package. But I was actually referring to the comment on a “Unity Authentication” service which would cover a couple of external identity managers, not only “Sign in with Apple”.
Besides, I found this package:
which at least at first sight seems to be a bit more solid than the official Unity package.