Glossary
Searchable terminology from accessibility, web standards, and related fields.
899 results found in Assistive Technology.
- JAWS for Windows (JFW)
- JAWS (Job Access With Speech) for Windows is a commercial screen reader from Freedom Scientific (now Vispero) that provides speech and braille output for blind and low-vision users on the Windows oper…
- JSML (Java Speech Markup Language)
- An XML-based markup language developed by Sun Microsystems that provides directives for controlling the output of speech synthesis engines. JSML allows developers to specify pronunciation details incl…
- Key Acceptance Delay (Acceptance Delay, Key Debounce)
- A keyboard accessibility setting that requires a key to be held down for a specified minimum duration before it is registered as a deliberate press. Keys released before the delay period expires are i…
- Keyguard (Keyboard Guard, Key Guard)
- A rigid cover that fits over a keyboard with holes aligned to each key, allowing users with motor impairments to rest their hands on the surface without accidentally pressing keys. Keyguards help peop…
- Keystroke Saving (KS, Keystroke Reduction)
- A metric used to evaluate word prediction and word completion systems, measuring the percentage of keystrokes that a user can avoid by accepting system predictions instead of typing each character ind…
- Kinesthetic Feedback (Kinesthetic Haptics, Force Feedback)
- A form of haptic feedback that engages the body’s sense of limb position, movement, and applied force — the kinesthetic sense mediated by receptors in muscles, tendons, and joints — rather than cutane…
- Knee-Ankle-Foot Orthosis (KAFO)
- A lower-limb orthosis that spans the knee, ankle, and foot to provide weight-bearing support and prevent knee buckling or hyperextension in people with significant leg weakness or paralysis - commonly…
- Knowledge Base (KB, FAQ Database)
- A knowledge base is a structured repository of information — typically questions, answers, articles, or how-to guides — that can be searched and browsed to find solutions to problems. In accessibility…
- Landmark Navigation (Navigate by Landmarks, ARIA Landmark Navigation)
- A screen reader navigation strategy that allows users to jump between major structural regions of a webpage defined by ARIA landmark roles (banner, navigation, main, complementary, contentinfo, search…
- Landmark-Based Navigation (Landmark Navigation, Landmark-Based Wayfinding)
- A wayfinding strategy that uses recognisable environmental features such as buildings, signs, or other prominent objects as reference points for giving directions, rather than relying solely on street…
- Language Localization (L10N, Localization)
- The process of adapting a product, application, or content for a specific language, culture, and region, including translation, cultural adaptation of imagery and symbols, currency and date formats, a…
- Language Remediation (Language Therapy, Language Intervention)
- Language remediation is the process of treating language disorders through structured intervention designed to improve a person's ability to understand and produce language. In the context of accessib…
- Large multimodal model (LMM, Multimodal AI, Vision-language model)
- An artificial intelligence model capable of processing and generating content across multiple modalities, such as text, images, and audio. Examples include GPT-4V and Gemini. In accessibility applicat…
- Last Meter Problem (Last Mile Problem, Final Approach Problem)
- In assistive technology for blind users, the challenge of bridging the gap between knowing an object exists and physically reaching or interacting with it. While object detection apps can identify wha…
- Latency (Delay, Lag, Response Time)
- The time delay between when an event occurs and when its accessible representation is delivered to the user. In real-time captioning, latency is the gap between spoken words and their appearance as te…
- Leapfrog Technology (Leapfrogging)
- The adoption of advanced or cutting-edge technology in contexts that skipped intermediate technological stages, bypassing legacy infrastructure to achieve modern capabilities directly. In assistive te…
- Lecture Capture (Lecture Recording, Classroom Recording)
- The process of recording classroom lectures, presentations, or educational sessions using video, audio, and screen capture technology for later review by students. Lecture capture systems range from s…
- Lifelogging (Life Logging, Digital Lifelogging)
- Lifelogging is the practice of automatically and continuously capturing data about a person's daily life using sensors, cameras, GPS, and other digital tools, typically worn or carried by the individu…
- Linear Discriminant Analysis (Fisher Discriminant Analysis, Fisherfaces)
- A statistical method used in pattern recognition and machine learning that finds a linear combination of features to best separate two or more classes of objects. In the context of face recognition, L…
- Lingraphica
- A commercially available computerized visual communication system designed to help people with aphasia communicate through icon-based sentence construction. Lingraphica provides a vocabulary of purpos…