INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD, INFORMATION PROCESSING DEVICE, AND INFORMATION PROCESSING PROGRAM

Provided is an information processing device that generates a visitor traffic line without having to collect information about the traffic of visitors. An information processing device includes a map information acquisition unit that acquires map information, a destination acquisition unit that acquires a destination, a route retrieval unit that retrieves a shortest route from a location on a road to the destination on a basis of road information included in the map information, and a visitor traffic line generation unit that generates a visitor traffic line from the shortest route retrieved by the route retrieval unit. The location of each road is a location remote from the destination by predetermined distance. In particular, the location is a location on at least one circle around the destination.