partial void PressToLogin(UIButton sender)
 {
     if (TouchIdUtils.RequestAuthentication("For Secrets!"))
     {
         PerformSegue("LoggedIn", null);
     }
     else
     {
         var alert = new UIAlertView("nope", "you still have your fingers, yes?", null, "Ok");
         alert.Show();
     }
 }
        public override void ViewDidLoad()
        {
            base.ViewDidLoad();

            if (TouchIdUtils.IsPhoneSecured())
            {
                TouchIdUtils.SetupTouchIdAuthentication();
            }
            else
            {
                var alert = new UIAlertView("oops", "no touch id or passcode set. Might want to fix that", null, "Ok");
                alert.Show();
            }
        }