The Cyber Assist project was initiated in 2000, and its R&D was conducted at Cyber Assist Research Center of AIST from 2001 to 2005. This project was a leading activity followed by ubiquitous computing and service engineering in Japan as well as one of the foresighted projects in the world. It should be highly evaluated even in the present time. The project had its focus on a human-centered information system that provides services in the physical world. This article rebuilds the goals and activities of the research center on the basis of documents produced then, and provides future research directions.