Yeah, this would be about the most inefficient way to do it. You barely ever have to show your ticket. There are no gates that track where you are. You just wal

Yeah, this would be about the most inefficient way to do it. You barely ever have to show your ticket. There are no gates that track where you are. You just walk into the train and go with it. Especially considering that tracking the general population by phone is much easier and efficient.