Abstract: A user identification module (UIM) 12 having a plurality of storage areas that may be built into or mounted in a mobile terminal 11. A contents server 19, upon receipt of a distribution request from the mobile terminal 11, may distribute a program or data used at the time of program execution through a network including a radio network. The program may be encrypted twice by the contents server 19. During distribution, the program may be decrypted a first time by a distribution management server 16. The program may be decrypted a second time by the UIM 12. The decrypted program and the data may be stored in one of a plurality of separate and independently operated memory blocks of the UIM 12 and not through the control unit of the mobile terminal 11. The program may be enabled for execution by the UIM 12 at the direction of the distribution management server 16.

Abstract: Since telephone terminals 301, 302 and 303 are used as control terminals in a network information system by using DTMF signals (or packet signals), there is no need for a specially designed terminal or computer system, and any user (or researchee) who has the telephone terminal can respond to a server. In addition, by using a calling function, which is essentially provided to the telephone terminals, when the system is in use, audio communication can be easily established between users.

Abstract: A UIM 12 having a plurality of storage areas is built into or mounted in a mobile terminal 11. A contents server 19, upon receipt of a distribution request from the mobile terminal 11, distributes a program or data used at the time of program execution or the program itself through a network including a radio network. This program and the data or the program itself are stored in the storage area of the UIM 12 and not through the control unit of the mobile terminal 11.