New design for a dynamic tactile graphic system for blind computer users

An interactive tactile graphic display which acts by touch force has been developed as a trial. The trial model showed four usability problems through several usability experiments. Thus we re-designed three operation rules and developed a new image resampling algorithm to solve the problems. As the result, all problems shown in the previous system were solved. Furthermore a strategy of user interface design for interactive tactile graphic displays was shown through the development. In addition, an audio-tactile graphic system which can be used mainly to overcome tactile cognitive limitation was implemented as an application of the system.