gistfile1.cs

        private void ShutdownComputer(IDevice computer, ISecurityCredentials credentials)
        {
            ServiceHelper.Call<ShutdownResponse>(computer, new Shutdown(), credentials, (shutdownResponse, exception) =>
            {
                if (exception is API.Exceptions.PermissionDeniedException)
                {
                    //  pincode required for call, prompt user for it in full version
                    if (credentials == null)
                    {
                        var dummyCredentials = new API.Security.PinCode
                            {
                                Code = "1234",
                                CodeId = "56",
                                UserId = Guid.NewGuid()
                            };
                        ShutdownComputer(computer, dummyCredentials);
                    }
                }
            });
        }