SSID's pretty much ARE tied to geo, and those that aren't tied are easy to identify. The basic tech is known to both major players [1,2]. First you crowdsource

SSID's pretty much ARE tied to geo, and those that aren't tied are easy to identify. The basic tech is known to both major players [1,2]. First you crowdsource as much of the data collection as you can: various apps can collect both SSID, BT, etc. sightings and report them with GPS. So you have a giant DB of locations vs network IDs. Then you tag any network ID which appears at differing locations: it's somehow mobile for whatever reason. The untagged ones are not mobile and probably dependable indications of location to within a few dozen meters. If they do move, they get tagged at your next sweep. 1. https://www.theverge.com/2011/05/12/google-android-skyhook-lawsuit-motorola-samsung https://www.theverge.com/2011/05/12/google-android-skyhook-l... 2. https://xconomy.com/boston/2010/08/04/skyhook-wireless-digs-in-touts-location-patents-after-apple-drops-technology-from-iphone/ https://xconomy.com/boston/2010/08/04/skyhook-wireless-digs-...