This has been around for ages. At least 20 years now. Loc-Aid had been one of the biggest provider of location data. Here are some articles: * https://www.n

This has been around for ages. At least 20 years now. Loc-Aid had been one of the biggest provider of location data. Here are some articles: * https://www.nytimes.com/interactive/2018/12/10/business/location-data-privacy-apps.html https://www.nytimes.com/interactive/2018/12/10/business/loca... * https://readwrite.com/loc-aid-the-biggest-location-s/ https://readwrite.com/loc-aid-the-biggest-location-s/ * https://www.technologyreview.com/2011/12/09/189247/startup-turns-your-cell-phone-number-into-a-location-fix/ https://www.technologyreview.com/2011/12/09/189247/startup-t...