| 摘要 |
PROBLEM TO BE SOLVED: To provide a system in which delivery of and access to digital data are conducted while maintaining security. SOLUTION: The system is provided with a step in which plural system elements 12, 16 and 18 are prepared, a step in which plural unique identifiers 20, 22 and 24 are related to the different system elements 12, 16 and 18 respectively and a step in which access to digital data 12 by the system is controlled based on the association among the unique identifiers 20, 22 and 24. |
