Evaluation of tactile perception about Braille, tactile guide map and tactile symbol

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The purpose of this study is to clarify the characteristics of each sensation of touch needed to effectively display the tactile guide map, Braille, tactile symbol. We revealed the followings. (1) Discriminating characteristics and sensory characteristics of the area pattern to be used in the tactile guide map. (2) Relationship of readability of Braille and the spacing between Braille and area pattern. (3) Dimension of the tactile symbol useful for improving operation of consumer electronics products such as mobile phone. For tactile guide map, we examined the discriminated characteristics of area patterns, and as result, combinations of identifiable area pattern is revealed. Appropriate distance between the surface pattern and Braille became clear. For tactile symbol, such as the convex dot attached on No.5 key of mobile phone, appropriate height and curvature also became clear.