Implementing Facebook login in Windows Phone applications

I'm currently working on Windows Phone applications that might need Facebook authentication on them. After browsing a little, I found that the Windows Azure platform's Identity services can be used for this task. Furthermore, there's a CodePlex project called ACS 2.0 that supports building .NET applications supporting this feature.

For Visual Studio, there's also available the Phone.Identity.AccessControl.BasePage NuGet package, which can be installed into Visual Studio to provide easy access to these features. I found a nice blog article detailing how to use these packages here.