Has this been tested, or is it just an idea. I imagine it would have some very serious limitations. Perhaps it could tell if you are likely in the US or Europe, but I doubt could get much more granular than that.
Starlink internet customers, and users of Apple's private relay (vpn-like service) would all be excluded?
Starlink internet customers, and users of Apple's private relay (vpn-like service) would all be excluded?