Using the ASP.NET Membership Provider and Authentication Service from Windows Phone 7
Those of you who have been building ASP.NET applications for a while now are no doubt familiar with the provider model, which includes provider abstractions for membership (authentication), roles (authorization), profiles (user data), and session state. These providers make it incredibly easy to provide a secure framework for your application. In fact, with an ASP.NET application template right out of the box, you can have a fully functioning authenticated, secure website in minutes.
What a lot of people have less familiarity with is the notion of provider services. You can actually create a WCF service head that sits on top of the ASP.NET membership system. This allows client applications (WP7) to authenticate against your ASP.NET website using exactly the same authentication scheme that your users use. This means that a user who has access to your website should also be able to have access to the client application seamlessly.
If you already have an ASP.NET application that is using the membership provider, role provider, and profile provider you can quickly, easily, and securely expose services to a mobile (WP7) client that allow that client to have secured, remote access to services exposed by that site. In short, any user of your existing web application can use their existing credentials to log in from their WP7 device and access any services you decide to make available.
ASP.NET provider services, coupled with WP7 and the fact that Silverlight has access to WCF client proxy generation, means you can very easily prep your site for a rich WP7 experience.
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