In my research, I implement evidence-based design and human characteristics-based design while developing various aids and assistive devices as mentioned at the beginning of this article. Academic-industrial collaboration provides a valuable opportunity to put this into practice. Previous joint researches include products such as cellphones, smartphones, cordless phones, staircases, home interiors, shoes (Figure 2), undergarment, nursing care beds, wheelchairs, styrofoam boxes, and touch screen games. The main target users for these are the elderly, those with disabilities, and children. A thorough consideration of the users’ characteristics from scientific approach is critically important in designing products.