The coming 21st Century is not only an information intensive technology society but also an aging society. This aging society may be characterized by shortages of the productive population; lost energies and vitality; an increased burden of the costs of social security. These will in turn necessitate the development of technology for energizing or reinvigorating the aging society. For elderly people who will have greater individual differences, the development of human machine interface technology which will respond to individual requirements will be indispensable, and to support the self-sustenance of the elderly, it will be important to provide user-friendly, safe and extensive ``commodities suitable to human life¡Ç¡Ç and ``barrier free commodities and environment¡Ç¡Ç.