Tactile graphic tool for portable digital pad

Abstract

Hand exploratory movements are an important aspect in the pedagogical exercise of teaching and learning diagrammatic representations among vision impaired students. The Tactile Graphic Tool is one such device allowing hand exploratory movement in making tactile diagrams of graphical and geometric constructions. In this paper the same device is modified to be used along with a portable digital pad making the tactile picture drawn accessible as digital picture in computer through its interface. Illustrations of tactile geometrical construction in tactile and digital format are provided. © 2010 Springer-Verlag Berlin Heidelberg.