Touchpad

A flat, pressure-sensitive input device that detects the position of a finger or stylus on its surface. In assistive technology contexts, touchpads are used as interactive overlays for tactile graphics and maps, enabling users who are blind to place a tactile printout on the pad and receive audio feedback corresponding to whatever feature they are touching. This combination of tactile and audio modalities allows non-visual exploration of spatial information such as maps, diagrams, and charts.