> Do they map WiFi spots accurately? Yes, there are a number of companies that maintain BSSID->Lat/Long Databases. Skyhook is probably the biggest commercial

> Do they map WiFi spots accurately? Yes, there are a number of companies that maintain BSSID->Lat/Long Databases. Skyhook is probably the biggest commercial one, and https://www.wigle.net/ https://www.wigle.net/ the biggest open source one.