Automate your passenger surveys during the ride in a public transportation vehicle (bus, tram, share taxi -- you name it). Click on-screen buttons to count passengers, and GPS coordinates of the vehicle's position will be saved automatically. The data you gather are then sent to the server to be displayed on the map. GPS receiver keeps gathering location data in the background even if you turn off your screen so that you always have correct coordinates when the vehicle stops and you unblock the screen. Full manual is available at: http://strategway.com/passim-manual/