抄録
For supporting human mobility, a map and its spatial expression is important. But visually impaired people have so many difficulties to read maps and to use spatial information in the field. We therefore research and develop the universal designed map which provides spatial information interactively for all people including even visually impaired people with no vision by using the contents expression which unites sense of sight, hearing and touch. We proposed "One Octave Scale Interface" for visually impaired people's intuitive map understanding, and ascertained its usability in the previous year's TRANSLOG2007 paper. In this paper, we report our recent progress to make the interface more usable.