content: Goes both ways, yes if a robber got their hands on this they could figure out if people are in the house or not, but the same goes for cops. A cop could know how many are in the house, if anyone is lying, if they might be ambushed if they look in the house, pretty much they can be better prepared. But if your logic is to say people can use this tech to rob easier, then cars shouldn't exist because it allows people to commit crimes easier, or we shouldn't have bridges because people might put explosives on them and cause mayhem.