5. Use the Ingress Intel map
This is not Niantec’s first location based game. Their other game is called Ingress and it has about 4 years of data behind it.
One of the assets Pokemon players can use is the Ingress Intel Map. It only uses your google login and shows the location of all the “Portals” in that game.
Those portals are the basis of the points for PokeStops and Pokemon Gyms in Pokemon Go. It is about an 80% match rate (80% of the portals are either Stops or Gyms).