> But the "Sign in with Facebook" button didn't appear by magic on the Android app, did it? Someone had to add support to their app for it.
It would be nice if you could add an identity provider to your OS and the app could ask the OS to identify you using your provider of choice for that application.
It would be nice if you could add an identity provider to your OS and the app could ask the OS to identify you using your provider of choice for that application.