Vittorio in the team has just completed a tutorial on his blog which walks through 5 very simple steps to create a service in Visual Studio Orcas and then secure it with the CardSpace technology. He then extracts specific claims which could then be used in any application.

The great thing is that he is using Windows Workflow Foundation (WF) to do a lot of the work, together with a new feature code named "Silver" which provide a simple capability to integrate Windows Communication Foundation (WCF) interactions with WF.

Pretty cool.

Take a look

http://blogs.msdn.com/vbertocci/archive/2007/05/02/a-silver-cardspace-securing-orcas-workflow-services-with-windows-cardspace.aspx