I'm sure that there's quite a few companies who can do the same using only your IP address (hence also via https) and getting your location at the accuracy of r

I'm sure that there's quite a few companies who can do the same using only your IP address (hence also via https) and getting your location at the accuracy of real world coordinates. And no, I'm not talking about using geoip information, I mean using data bought through 3rd parties selling location data collected through $yourfreeinstalledapp.