Hi,
Just a question, is it possible to use OAuth 2.0 for an APK (from Google/Azure AD) , and deleguate the "token" to others APK, for authentification and security purposes (like fedaration), made in that case by only one APK???
I think so. I do something similar with an OAuth 1.0 system. OAuths 1.0 and 2.0 are very different beasts but I think it should be possible. Have you tried it?