Glossary
Searchable terminology from accessibility, web standards, and related fields.
899 results found in Assistive Technology.
- Grab Bar (Safety Rail, Support Bar, Handrail)
- A rigid, wall-mounted bar designed to provide support and stability for people who need assistance maintaining balance, transferring between positions, or preventing falls. Grab bars are most commonly…
- Graphical Semantic Enhancement (Semantic Graphics, Labeled Graphics)
- The practice of enriching graphical objects with meaningful text labels, descriptions, and metadata so that they can be understood non-visually. In accessible drawing and diagramming tools, graphical …
- Graspable Interface (Graspable User Interface)
- A graspable interface is a type of tangible user interface in which users interact with a computer system by physically grasping and manipulating real-world objects that are tracked by the system, typ…
- Grid Recursion (Recursive Grid Navigation, Hierarchical Grid)
- A navigation technique where a grid cell can be further subdivided into a finer sub-grid, allowing users to achieve progressively more precise positioning through successive levels of refinement. For …
- Grid-Based Interface (Grid Navigation Interface)
- An interaction paradigm that divides a screen or workspace into a grid of cells, allowing users to navigate by specifying grid coordinates rather than precise pixel positions. Grid-based interfaces ar…
- Grid-Based Navigation (Grid Navigation, Grid Cursor Control)
- A speech-controlled cursor positioning technique that divides the screen into numbered regions, allowing users to select progressively smaller areas by speaking numbers until the cursor reaches the ta…
- Gross Motor Movement (Gross Motor Skills, Gross Motor Control)
- Large body movements involving the major muscle groups of the arms, legs, and torso, as opposed to fine motor movements that require precise control of small muscles in the fingers and hands. In assis…
- Guide Dog (Seeing Eye Dog, Service Dog, Dog Guide)
- A specially trained assistance animal that helps blind or visually impaired individuals navigate their environment safely. Guide dogs are trained to avoid obstacles, stop at curbs and steps, and navig…
- HAAT Model (Human Activity Assistive Technology Model)
- A conceptual framework for understanding and designing assistive technology systems that identifies four interconnected components: the human user, the activity being performed, the assistive technolo…
- HULOP (Human-scale Localization Platform)
- An open-source indoor navigation platform originally developed by IBM Research to support blind navigation using Bluetooth Low Energy (BLE) beacon fingerprinting for localisation plus a topological ma…
- Hand-Object Interaction (Hand-Object Interactions, HOI)
- The full range of physical actions people perform when grasping, touching, holding, manipulating, or gesturing toward objects with their hands. In accessibility research, hand-object interactions are …
- Hands-Free Control (Hands-Free Interaction, Hands-Free Input)
- Any method of operating a device or computer system that does not require the use of the hands or fingers. Hands-free control encompasses a range of input techniques including voice commands, eye trac…
- Hands-Free Interface (Hands-Free Computing, Hands-Free Input)
- A hands-free interface is a computer interaction system that does not require the use of hands or fingers, enabling users to control software through alternative input channels such as head movements,…
- Hapget (Haptically-Enhanced Widget)
- A hapget (haptically-enhanced widget) is a user interface element that combines a 3D visual representation with haptic (touch) feedback, audio cues, and descriptive metadata to enable non-visual inter…
- Haptic Design (Vibrotactile Design, Haptic Authoring)
- The practice of authoring haptic feedback - typically vibrations, forces, or temperature cues - so that it conveys intended meaning, emotion, or synchronicity with other media. Haptic design involves …
- Haptic Device (Haptic Interface, Force-Feedback Device, Tactile Device)
- A hardware device that provides tactile or force feedback to users, enabling them to feel virtual objects, textures, resistance, or vibrations. Haptic devices range from simple vibration motors in sma…
- Haptic Exploration (Tactile Exploration, Touch Exploration)
- The process of acquiring spatial and object information through systematic touch and hand movements. Haptic exploration involves active manipulation and movement across surfaces to perceive shape, siz…
- Haptic Input (Haptic Interaction, Touch Input)
- Haptic input refers to interaction methods that use the sense of touch to communicate information between a user and a computer system. This includes devices such as data gloves, force-feedback contro…
- Haptic Pointing Device (Force Feedback Mouse, Haptic Mouse, Force Feedback Pointing Device)
- An input device that combines the pointing functionality of a mouse or stylus with the ability to generate physical forces that the user can feel through their hand. Unlike a standard mouse that provi…
- Haptic User Interface (Haptic UI, Haptic Interface)
- A user interface that communicates information through the sense of touch, enabling users to interact with virtual or digital objects by feeling their physical properties such as shape, texture, weigh…