I am in the middle of working on Android app, and for the user registration bit, I've been reading how they recommend developers to make use of Google+ sign-on integration.
However, I was wondering, will there be any possibility of Android users not having a Google+ account? Will a Google+ account automatically be created for anyone who registered their Android devices with a valid Gmail account?
Thanks!
Google Play requires that users have a Google account to install apps and the new Google+ Sign-In flow works for all Google accounts regardless of them being upgraded to Google+ or not.