| 摘要 |
PROBLEM TO BE SOLVED: To prevent an application program from being unauthorizedly copied by preventing the application program from being installed by any one other than a client who has made an official purchase agreement for the program. SOLUTION: Even when the application program and data are downloaded to a terminal 5, it is made impossible to use them as they are. Unique identification codes that do not overlap on one another are allocated to all application programs, and an identification code response module 7 that responds with the identification codes as a key is incorporated into the application program, the program is provided to an application program supply source 3. An identification code authentication module 8 executes an authentication processing responding to an identification code authentication module 13 in a terminal 5. |
