I'm writing an app which accesses user information over the web. I want to use the Microsoft Account of the current user, to identify them to my application and, in turn, to the cloud-hosted services supporting the application. If they don't have an account, I would prompt them to create one.
In short, I would like functionality much like the Games hub of Windows 8, but I haven't found any tutorials on user identity that could start me in the right direction.