To change a licence using condition document, use plural licences together and realize a paper-use licence by connecting digital contents and the licence use condition document and monitoring the distribution of digital contents, so as to manage the using degree of the contents of communication.
Inputted user information or changed data is examined and whether licence data and the digital contents correspond to each other is discriminated. Then operation monitoring data is generated through the use of inputted licence data and changed data, the using situation of the digital contents corresponding to licence data is recorded in operation monitoring data and the licence using condition document is updated, based on changed data to monitor the using situation of the digital contents.
INMAKI NAOFUMI
KOIKE HIDEKI
