Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 144 of 333
- HoloLens (Microsoft HoloLens)
- A self-contained, wearable mixed reality headset developed by Microsoft that overlays interactive holograms onto the user's real-world environment. HoloLens uses spatial mapping, gaze tracking, gestur…
- Home Accessibility Audit (Home Safety Assessment, Indoor Accessibility Assessment, HSSAT)
- A systematic evaluation of a residential space to identify barriers to access, safety hazards, and opportunities for modification to support people with disabilities, older adults, or families with yo…
- Home Automation (Domotics, Smart Home Automation)
- The use of technology to automatically control household systems and appliances such as lighting, heating, ventilation, security, and entertainment. Home automation systems use sensors, timers, and pr…
- Home Button (Home Key, Home Screen Button)
- The home button is a persistent, consistently-placed control on a device that returns the user to a known starting state — typically the home screen or main menu — from anywhere in the interface. From…
- Home Page Reader (IBM Home Page Reader, HPR)
- A talking web browser developed by IBM Japan in the late 1990s, designed specifically for blind and low-vision users. Home Page Reader combined a web rendering engine with the ProTalker text-to-speech…
- Homebound (Housebound)
- A status in which an individual has difficulty leaving their home without assistive devices or help from others, typically due to illness, injury, or environmental factors such as lack of transportati…
- Homomorphic Encryption (Partially Homomorphic Encryption, Fully Homomorphic Encryption, FHE)
- Homomorphic encryption is a form of encryption that allows computations to be performed on ciphertext (encrypted data) without first decrypting it, such that the result, when decrypted, matches the re…
- HoneyPage (Honey Page)
- A purpose-built test web page used by researchers to study the behaviour of browser extensions, crawlers, or malware in a controlled environment. HoneyPages are instrumented to record network requests…
- Hong Kong Sign Language (HKSL)
- Hong Kong Sign Language (HKSL) is the primary sign language used by the deaf and hard of hearing community in Hong Kong. It has its own distinct grammar and linguistic rules that differ significantly …
- Hornbostel-Sachs Classification (Hornbostel-Sachs System, Sachs-Hornbostel)
- A comprehensive system for classifying musical instruments based on how they produce sound, originally developed by Erich von Hornbostel and Curt Sachs in 1914. The system divides instruments into fou…
- Hostile Design (Hostile architecture, Deterrent design)
- A design orientation in which systems — physical, digital, or bureaucratic — are intentionally configured to deter use, discourage certain populations, or reduce uptake, rather than to enable access. …
- House-Brackmann Scale (H&B Scale, House-Brackmann Grading System)
- The House-Brackmann Scale is a clinical grading system used to assess the degree of facial nerve dysfunction in facial palsy. It ranges from Grade I (normal function) to Grade VI (total paralysis), ev…
- Huffman Coding (Huffman Algorithm, Huffman Tree)
- A data compression algorithm that assigns shorter codes to more frequently occurring symbols and longer codes to less frequent ones, producing an optimal prefix-free encoding. In accessibility and AAC…
- Human Activity Recognition (HAR, Activity Recognition)
- A field of machine learning and ubiquitous computing that uses sensor data — typically from accelerometers, gyroscopes, and other sensors in smartphones, smartwatches, or other wearable devices — to a…
- Human Augmentation (Body Augmentation, Augmentative Technology)
- Technologies that extend or enhance human physical or cognitive capabilities beyond their current state, including robotic exoskeletons, prosthetic limbs, sensory substitution devices, and brain-compu…
- Human Computation
- A computing paradigm in which humans perform tasks that computers cannot yet do reliably, often embedded within systems that combine human and machine capabilities. The classic example is reCAPTCHA, w…
- Human Computation (Crowdsourced Computing)
- A computational approach that harnesses human intelligence to perform tasks that computers cannot easily accomplish alone. In accessibility contexts, human computation powers services like remote sigh…
- Human Cooperation (Accessibility) (Cooperative Shared Control)
- In the context of accessible gaming and assistive technology, human cooperation refers to arrangements in which a disabled user (the pilot) and another person (the copilot) jointly operate a single sy…
- Human Factors Engineering (Ergonomics, Human Factors)
- The scientific discipline concerned with designing systems, products, and environments to be compatible with the physical and cognitive capabilities and limitations of the people who use them. In acce…
- Human Failure Modes and Effects Analysis (HFMEA, Human FMEA)
- An adaptation of Failure Modes and Effects Analysis (FMEA) that focuses specifically on human performance and error. HFMEA systematically examines each step in a process to identify how humans might f…