Google street view cars also collect WiFi data (or at least used to): https://europe.googleblog.com/2010/04/data-collected-by-google-cars.html https://europe.go

Google street view cars also collect WiFi data (or at least used to): https://europe.googleblog.com/2010/04/data-collected-by-google-cars.html https://europe.googleblog.com/2010/04/data-collected-by-goog...