--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SilverlightExampleApp/SilverlightExampleApp.Web/Services/AuthenticationService.svc.cs	Tue Apr 17 17:57:52 2012 +0100
@@ -0,0 +1,35 @@
+using System.ServiceModel;
+using System.ServiceModel.Activation;
+using System.Web.Security;
+
+namespace SilverlightExampleApp.Web.Services
+{
+    [ServiceContract(Namespace = "")]
+    [SilverlightFaultBehavior]
+    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
+    public class AuthenticationService
+    {
+        [OperationContract]
+        public bool Authenticate(string username, string password)
+        {
+            if (ValidateLogin(username, password))
+            {
+                FormsAuthentication.SetAuthCookie(username, false);
+                return true;
+            }
+            return false;
+        }
+
+        [OperationContract]
+        public bool LogOut()
+        {
+            FormsAuthentication.SignOut();   
+            return true;
+        }
+
+        public bool ValidateLogin(string username, string password)
+        {
+            return username == "stevenh" && password == "password";
+        }
+    }
+}