I would guess that setting up a WiFi receiver outside of anyones living space but within signal range is not illegal if you are not intercepting and decoding pa

I would guess that setting up a WiFi receiver outside of anyones living space but within signal range is not illegal if you are not intercepting and decoding packets, so anyone could currently get visibility into any home with WiFi. Police, neighbors, crooks, anyone. However there is some precedent for police, they are not allowed to use thermal viewers to look through the walls of peoples homes without a warrant. This would seem to be similar. It's been disconcerting that the police have just adopted technologies because they think they would be useful without anyone considering whether a warrant should be required. There should be a law saying that any technology use by police requires a warrant unless it has been specifically allowed to be warrantless. There are some good uses of a WiFi tracker though, such as an automated health monitor. I'd like to have a continuous record of where I am in my house. I could use it to tell how much time I spend on a computer, how much sleep I get, what I spend most of my time doing, how much exercise I get, where I left some object, lots of things. I just don't want other people or companies to have all that information and I don't want the police or government to be able to get it without a warrant.