Abstract: An aluminum alloy extruded material having chemical composition that includes Cu by 2.5 to 3.3%, Mg by 1.3 to 2.5%, Ni by 0.50 to 1.3%, Fe by 0.50 to 1.5%, Mn by less than 0.50%, Si by 0.15 to 0.40%, Zr by 0.06 to 0.20%, and Ti by less than 0.05% in mass percentage, and the remaining part that includes Al and inevitable impurities. On a cross-section of the aluminum alloy extruded material, a grain diameter of an intermetallic compound is 20?m or less in equivalent circle diameter; density of an intermetallic compound, whose grain diameter is 0.3 to 20?m in equivalent circle diameter, is 5×103 piece/mm2 or more; and, an average grain diameter of sub-crystal grains is 20?m or less in equivalent circle diameter.

Abstract: A game is divided into a plurality of charged playing sections which a player can play by paying a point and the thus divided charged playing sections are set. Game cards to which proper passwords are respectively assigned are distributed. The password is transmitted from a game playing terminal to a server, and the point corresponding to the password is set by the server. At this time, data comprising an image of a present item usable in the game is downloaded into the game playing terminal. In the game playing terminal, the image of the present item is produced and is displayed, and the server controls for allowing the player to play the charged playing section within bounds of the point which has been set on the account.

Abstract: A game is divided into a plurality of charged playing sections which a player can play by paying a point and the thus divided charged playing sections are set. Game cards 33 to which proper passwords 35 are respectively assigned are distributed. The password is transmitted from a game playing terminal 9 to a server 10, and the point corresponding to the password is set by the server. At this time, data CDP comprising an image PI of a present item 37 usable in the game is downloaded into the game playing terminal 9. In the game playing terminal, the image of the present item is produced and is displayed, and the server controls for allowing the player to play the charged playing section within bounds of the point which has been set on the account.

Abstract: A unique ID 35 by which a distribution region can be identified is attached to a use-permission certificate 33 distributed in different regions. Different terminal devices send unique terminal device IDs to a data management device. Based on these IDs, the region in which the terminal device is installed is determined. IDs attached to use-permission certificates are sent by the terminal devices to the data management device through a communication network. Based on these IDs, the distribution regions of the use-permission certificates are determined. If the determined terminal device installation region and the use-permission certificate distribution region match, the use of data by the terminal device is allowed.