We do the research that aims at Computer Supported Cooperative Work in Okada and Shigeno laboratory. We also do the researches such as concerning the network and security, and concerning ubiquitous and broadcasting. So the theme that becomes an object takes up various topics in addition. Our basic concept is to propose and achieve the system that man and the computer can be good each other, and to promote a new communications with man and the computer and with a person and a person.