Abstract
User-centric service is indispensable for the ubiquitus society. Because it is easy to acess contracted service from the arbitrary terminal or location. User-centric service is unrealizable in the present service contract system, unfortunately. The present service contract system, the only specific terminal that was granted ID can access the contracted service, has a low level of free selection for users. In this paper, we mention that it is necessary for the service in the ubiquitus society that has diversity of selection for the users and let the users use their services freely. We express it "user-centric service", and mention its requirements. And, for an example, we consider "user-centric content service".
