Originally Posted by GH85Carrera

In the US, they are legally restricted to 400 feet max altitude. That is often ignored by the owners.

If you get into the hobby of UAVs you will soon find the web sites that have the shady guys. They build their own UAVs with parts from multiple web sites or hobby stores. They build them with no identification and they are careful to leave no clues as to the origin. We can all hope they just like playing outside the law, and have no evil intentions. But they can build those, and sell them to bad guys to have them fly contraband into prisons, and if the UAV is captured, it can't be traced.