Tactile Legibility

The ease with which tactile information—including tactile graphics, braille, and raised-line diagrams—can be accurately perceived and understood through touch. Tactile legibility depends on factors including the distinctiveness of textures used, appropriate spacing between elements, sufficient contrast between adjacent regions, clear boundary lines, and the overall complexity of the graphic. Designing for tactile legibility requires attention to the specific capabilities and limitations of touch perception, which differs fundamentally from visual perception in resolution, field of attention, and processing speed.