Do you think that's a solvable problem? I would imagine it isn't, outside of using statistical analysis to spot obvious widespread cheating.
Combine that with Niantic's shift from freely giving equipment away to forcing players to "glyph hack" (repeat back a series of proprietary symbols) and casual players dropped out of the game.
It's a lot harder to spoof say for example APs near you, signal strength to a cell tower, and/or IP geolocation - than a GPS signal.
If you can spoof all of that - you probably aren't interested in playing a game like ingress. You have your own more interesting game you play...