US Patent 9465816 Generating an image of a floor plan

Program code on a mobile computing device and a server computer determines a location of a mobile computing device within a facility, based on coordinates associated to the location. The program code assigns a timestamp to the coordinates that are associated to the location. The program code stores location information in a database, wherein the location information includes the coordinates associated to the location, the timestamp that is assigned to the coordinates, and a unique identifier of the mobile computing device. The program code generates an image of a floor plan of the facility.