What I would like to do is simply use Steam for authentication and then tie all PlayFab user-specific services to the player's Steam account, with no user management done on the player's end. I don't want them to have to create a PlayFab account, or any manual actual past launching the game from Steam. Is this possible? Is it as simple as logging in with steam and then creating an account for the user behind the scenes, and populating the minimum required information based on information available from their Steam account?