I've been running WiGLE on my phones since 2013 or so and I have 2.1 million observations recorded, notably I don't run this 24/7. I'm just one guy with a phone and I wager I could sus out some interesting patterns from my neighborhood and city. I fully plan to as well, it's one of those back burner projects I keep plotting on. That said it really opened my eyes after they added Bluetooth support sometime ago. I can tell when particular nextdoor neighbors are home just by seeing their Galaxy Watch or earbuds in my network list. I can't even imagine what clever people could do with a continuous stream of wireless observations from thousands of points all recorded 24/7. It makes me feel naked in a way but I trust no one will bother to look my way and I go on with my life but I am at least aware of it. I wonder if normal people would care that corporations and the government can see their travels, patterns and habits and what can be potentially be surmised by such data.