void EnteredRegion(object sender, MonitorEventArgs e)
 {
     if (isPaused)
     {
         ShowNotification();
     }
 }
 void ExitedRegion(object sender, MonitorEventArgs e)
 {
     RunOnUiThread(() => Toast.MakeText(this, "No tokens visible", ToastLength.Short).Show());
     UpdateDisplay("No tokens found", Color.Black, Color.Gray);
 }