답은 복잡하지는 않지만 여기서 얘기하고 싶지는 않구요, 통신시스템이 이런 일을 하는데 꽤 잘 작용합니다.
And the answer is not complicated but it's one which I don't want to go through here, other than to say that the communication systems for doing this are really pretty well understood.