Glossary

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Unimanual Input(also: One-Handed Input, Single-Handed Interaction)

Interaction techniques designed to be operated with only one hand, enabling access for users who cannot use both hands due to disability, injury, or situational constraints. In VR contexts, unimanual input is important for users with upper limb impairments, amputations, or…

Unistroke Gesture(also: Single-Stroke Gesture, Unistroke)

A unistroke gesture is a shape or symbol drawn in a single continuous stroke on a touch screen or digitizer, which is then recognized by software as a specific command or input. In accessible interfaces for blind users, unistroke gestures provide an efficient way to create…

Virtual Keyboard(also: On-screen keyboard, Soft keyboard, OSK)

A software-rendered keyboard displayed on screen that allows users to input text by clicking, tapping, or hovering over virtual keys using a mouse, trackball, touchscreen, eye tracker, or other pointing device. Virtual keyboards are essential assistive technology for people with…

Voice Command(also: Voice Control, Spoken Command)

An input method where users speak predefined words or phrases to control software or perform actions. In assistive technology, voice commands enable hands-free and eyes-free interaction, allowing users to perform operations like text editing (delete, insert, replace),…

Voice Input(also: Voice Control, Voice Command, Speech Input)

An input modality that allows users to control devices, enter text, or issue commands using spoken language, typically processed through speech recognition technology. Voice input is an essential accessibility feature for people who cannot use traditional input devices such as…

Voice Recognition(also: Speech Recognition, Voice Control, Voice Input)

Technology that identifies and processes human speech to convert it into text or execute commands. Voice recognition serves as a critical assistive technology for people with motor disabilities who cannot use a keyboard or mouse, enabling them to navigate websites, dictate text,…

Voice-to-Text(also: Voice Typing, Dictation, Voice Input)

Technology that converts spoken language into written text, enabling users to compose text by speaking rather than typing. Voice-to-text is an important accessibility tool for people with motor disabilities affecting manual dexterity, repetitive strain injuries, or temporary…

Word Prediction(also: Predictive Text, Word Completion)

A text input feature that suggests complete words based on the characters already typed, using language models to anticipate the most likely intended word. In assistive technology, word prediction is particularly valuable for single-switch users and people with motor…

Wrist Gesture(also: Wrist-Based Gesture, Hand Gesture Input)

A movement of the wrist or hand used as an input command for interacting with wearable devices, particularly smartwatches. Wrist gestures enable one-handed, eyes-free interaction by allowing users to control their device using the same hand that wears the watch, without needing…