Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 138 of 333
- HTML Table (Data Table, Web Table)
- An HTML table is a structured element in web markup used to organize data into rows and columns. Tables are created using the table, tr (table row), th (table header), and td (table data) elements. Fo…
- HTML5 Track Element (<track> Element, Track Tag, HTML Track)
- The HTML5 <track> element is used to specify timed text tracks for <video> and <audio> elements, providing a standardized way to associate captions, subtitles, descriptions, chapters, and metadata wit…
- 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…
- Hackability
- A methodology and design philosophy for encouraging DIY assistive technology development in which disabled people, allies, and professionals collaboratively hack, adapt, and remix existing objects int…
- Hackathon (Accessibility Hackathon, Makeathon, ATHack)
- A time-limited event (typically hours to days) where participants collaborate intensively to design and build technology solutions, often as prototypes or proofs of concept. Accessibility hackathons s…
- Halant (Virama, Hasanta)
- A diacritical mark used in Indian (Indic) scripts to suppress the inherent vowel of a consonant, enabling the formation of consonant clusters or conjuncts. When a halant follows a consonant, it indica…
- Hallucination (AI Hallucination, Confabulation)
- In the context of AI and large language models, the generation of content that is plausible-sounding but not grounded in the input data or factual reality. Hallucinations pose a particular risk in acc…
- HamNoSys (Hamburg Notation System)
- A phonetic transcription system designed to represent the form of signs in any sign language. Developed at the University of Hamburg, HamNoSys captures detailed information about hand movements, hands…
- Hamburger Menu (Hamburger Icon, Menu Icon)
- A UI pattern using three stacked horizontal lines (☰) to hide and reveal a primary navigation menu, most commonly on mobile interfaces. Accessibility considerations include the need for an accessible …
- Hand Tracking (Gesture Tracking, Hand Gesture Recognition)
- A technology that detects and tracks the position, orientation, and movements of a user's hands and fingers without requiring physical controllers, typically using cameras and computer vision algorith…
- Hand-Eye Coordination (Visual-Motor Coordination, Eye-Hand Coordination)
- The ability to coordinate visual information with hand movements to perform tasks such as reaching, grasping, placing, and manipulating objects. For people with low vision, hand-eye coordination can b…
- Hand-Eye Coordination (Visuomotor Coordination, Eye-Hand Coordination)
- The ability of the visual system to coordinate information received through the eyes to control and guide hand movements in accomplishing tasks such as writing, catching a ball, or using a touchscreen…
- 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 …
- Hand-Over-Hand Technique (Hand-Over-Hand Guidance, Hand-Over-Hand Training)
- A training and communication method commonly used with individuals who are blind or have visual impairments, where a trainer places their hands over the learner's hands to physically guide them throug…
- Hand-Under-Hand Technique (Hand-Under-Hand Guidance, Hand-Under-Hand Training)
- A training and communication method used with individuals who are blind or have visual impairments, where the learner places their hands on top of the trainer's hands to feel the movements being demon…
- Handicapping (Handicap System, Player Balancing)
- A mechanism that asymmetrically adjusts game or contest conditions so competitors of differing ability have more equal chances to win or participate meaningfully. Long established in sports such as go…
- 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 Interaction (Hands-Free Computing, No-Hands Input, Hands-free, Hands-free Computing)
- The ability to operate digital devices and interfaces without using the hands, typically through voice commands, eye tracking, head movements, foot controls, or brain-computer interfaces. Hands-free i…
- 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,…
- Handshape (Hand Configuration, Handform)
- One of the five fundamental parameters of sign language phonology, referring to the specific configuration or shape of the hand(s) when producing a sign. Handshapes are a primary way signs are disting…