Tap-to-Hear

An interaction paradigm used in tactile graphic readers and touch-based accessibility tools where users touch or tap on elements of a tactile graphic to trigger spoken audio descriptions of the element beneath their finger. Tap-to-hear is the current standard approach for exploring 2D graphics through tactile devices but has limitations with complex visuals such as multi-line charts where lines overlap and intersect, making it difficult to distinguish and query individual elements.