A method, apparatus, and computer readable storage to implement a social networking game that enables players to scan QR codes (or other identifying markers) and transmit the items scanned to a server that determines the physical location of the player. Players can play a game where they attempt to find and scan as many QR codes as possible. In an embodiment, the QR codes can also be used for crowd control. People in areas that are overly populated can be incentivized to move to lower traffic areas by offering them incentives for reporting to the low traffic area.