To adaptively provide service that is comfortable for users in response authentication results of the users, when authentication of users is performed to provide service.
When a service providing server 11 receives a request for providing service from a user 12 and authenticates the user, some levels of authentication results are formed, so that access can be gradually controlled to the user 12 based on the authentication results with levels. After the access is controlled, service data is retrieved from a database 17. At the time of providing service, the retrieved service data is converted on the basis of using environments of the user 12 to control the contents of provided service, so as to provide the service corresponding to the results of user authentication, namely the service applicably corresponding to using environments of the user 12.
COPYRIGHT: (C)2003,JPO
Satoshi Wakao
Suji Yuji
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