We also know they had elevators that at least their operating systems could tell who was wanting to use them. As the one in fake Amaurot greeted us. Then there's the teleport pads in Elpis which only allow those who have permission to use them. Yes, they then get coded to allow us to freely use them after the fist time. Yet we still had to use it in the presence of Hythlodaeus during those initial uses.