PROBLEM TO BE SOLVED: To provide a system or the like for searching a human related to a player, when the player commits a fraudulent act in a game.;SOLUTION: In a related human retrieval server, information which combines a human ID that is an ID for identifying a human and face image data of a human, and a management table for managing game time and a position of a game machine are stored. Image information imaged by an image imaging device is obtained. It checks whether a face of the human appears in the obtained image, and when the face appears, a face area in the image is detected. It identifies what ID is assigned to the human in the face image by searching the face image similar to the detected face image. It determines which game machine the identified human in the face image plays in. The game time is calculated based on the time when the face is authenticated. A related score between players is searched from the obtained human ID, the position of the game machine, and the game time.;COPYRIGHT: (C)2010,JPO&INPIT
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