Abstract
People's communication activities with system have been changed from ordinary products into mobile devices and services under the name of "KEITAI." The change is shaped by state of art on Information Communication Technology. However, those changes are realized as replacing technology or combined functions of them. User Experience point of view has been missing in the changes. This paper shows a case of designing services for purchasing with recording and editing of purchaser's experience. In the case design, importance of User Experience approach is discussed. Especially effectiveness of practicing the assumed activity by designer themselves has been examined from the point of Activity Based Design Development methods (Sunaga 2003).
