void OnTriggerEnter(Collider otherCollider)
 {
     if (otherCollider.transform.tag.Equals("Marker"))
     {
         if (m_Selected.GetPersistentEventCount() >= 0)
         {
             m_Selected.Invoke(otherCollider.transform);
         }
         else
         {
             print("Collided with virtual hand, no attached script for handling");
         }
     }
 }