I would think one of the best way is to have a drone operator take control of the drone when it has reached it's delivery location, in order to ensure a safe de

I would think one of the best way is to have a drone operator take control of the drone when it has reached it's delivery location, in order to ensure a safe delivery. This would require you to keep a drone operator at hand, but if you have multiple drones in air at the same time, it might pay off.