Pokemon Go launching in Japan in Mcdonalds. I would imagine

If your phone isn't adequate I'd start there.

OP has a very good observation, GPS won't work if the signal is blocked by concrete, even with a good GPS receiver it'll need to be a few meters from a window depending on the height of surrounding buildings
But if I was running the project I'd over come this at the software level with pokemon appearing based on free WiFi unique to McDonald's premises
Interested in seeing some sauce on this

You phone doesn't only use satellites for determining your position. It also uses cell towers. This is why you don't lose location service under a dense canopy of trees as you would with a standalone GPS receiver.

I think theres actually enough BS in a modern phone (or Apple shit, anyway) to track halfway reliably from last-known GPS - acelorometers, gyroscopes, whatever the fuk.. Add to to tower traiangulation per >>1025178 above, so much for POKEMON GO at least gets thh NEETs outta the cellars, and into the fresh air..

Obv. you need to enable and allow this whole bollocks - oitherwise, be illegal, wunnit? - just select 'PRIVACY? - NOTHANKS' option, or, install GO, same result.

>>1025179
>Le Apple is best

They also use wifi triangulation - google knows where all the wifis are from android phones and street view mapping

Did you know that many wifi hotspots include their GPS location, and that Google collects all that data to use with their enhanced location services? So does every cell tower.

The GPS in your phone is almost always a low-precision device. It's data from additional sources that makes it functional.

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>>1025181
>Apple is best
..at tracking? They Chiefs.

>>1025192
No they don't - they mapped them roughly while they were street viewing and I'm sure android / google maps constantly collects data on where they roughly are, but there isn't a GPS chip in a router