Glossary

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GUI Widget(also: UI Widget, User Interface Widget, Control)

A graphical user interface element that users can interact with or that displays information, such as buttons, text fields, images, checkboxes, and sliders. In mobile accessibility, widget types determine which accessibility requirements apply—interactive widgets like buttons…

Gestural Input(also: Gesture-based Input, Touch Gestures)

Input methods that interpret finger movements on a touchscreen as commands, including taps, swipes, pinches, and multi-finger gestures. For blind users, gestural input must be performed without visual feedback, requiring consistent gesture recognition regardless of screen…

Gesture Typing(also: Swipe Typing, Trace Typing, Glide Typing)

A text entry method on touchscreen devices where the user enters a word by continuously gliding their finger from letter to letter on a virtual keyboard without lifting it, rather than tapping each key individually. The continuous trace is interpreted by a statistical decoder…

Gesture sonification(also: Touch sonification, Gesture-to-sound mapping)

The technique of converting touchscreen finger movements into real-time audio representations by mapping spatial position to sound parameters — typically pitch for vertical position and stereo panning for horizontal position. Gesture sonification enables blind and visually…

Gesture vocabulary(also: Gesture set, Interaction gesture repertoire)

The complete set of touch gestures recognized and used by a device or application, including single-stroke gestures (swipes, flicks), multistroke gestures (multi-tap, draw-then-tap), and multitouch gestures (pinch, rotate, two-finger swipe). As touchscreen interfaces evolve,…

Gesture-Based Input(also: Gesture input, Gestural input, Gesture-based text entry)

An input method that interprets finger or hand movements — such as swipes, taps, and drawn paths — as commands or text characters. For people with visual impairments, gesture-based input on touchscreens offers an alternative to traditional keyboard layouts that require targeting…

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