Direct Touch Mapping

An interaction technique in accessible touchscreen interfaces where the physical position of a user's finger on the screen corresponds directly to a position within the underlying content, such as a data visualization. When applied to chart accessibility, direct touch mapping allows blind users to explore data by sliding their finger across the screen and receiving immediate audio or haptic feedback that represents the data values at each position. This contrasts with semantic navigation approaches that organize content into discrete, sequentially navigable elements, offering instead a more spatial and continuous exploration experience.