Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 173 of 333
- Live Captioning (Real-Time Captioning, CART)
- The process of creating captions in real time as audio content is being produced, rather than from a pre-existing script. Live captioning is used in television news broadcasts, live events, videoconfe…
- Live Captions (Google Live Caption, Automatic Captions)
- An Android accessibility feature that automatically generates real-time captions for any audio playing on the device, including videos, podcasts, phone calls, and video meetings. Unlike Live Transcrib…
- Live Description (Real-Time Description, Live Audio Description)
- The practice of providing descriptions of visual content in real time as events unfold, as opposed to scripted descriptions added during post-production of recorded media. Live description is used in …
- Live Region (ARIA Live Region, aria-live)
- A section of a web page that is dynamically updated and announced by assistive technologies without requiring the user to navigate to it. Live regions are defined using the WAI-ARIA aria-live attribut…
- Live Transcribe (Google Live Transcribe)
- An Android accessibility feature developed by Google that provides real-time speech-to-text transcription, displaying spoken words as text on the smartphone screen. Live Transcribe supports over 80 la…
- Lived Experience (First-Person Experience)
- Knowledge and understanding gained through direct personal experience of a condition, situation, or identity, as distinct from theoretical or observational knowledge. In disability and accessibility r…
- Livestream Accessibility (Live Video Accessibility)
- The practice of making live video broadcasts accessible to people with disabilities, particularly viewers with visual or hearing impairments. Livestreams present unique accessibility challenges becaus…
- Livestreaming (Live Streaming, Streaming)
- Broadcasting real-time video content to an online audience, typically through platforms like Twitch, YouTube Live, or Facebook Gaming. Viewers can interact with streamers through text chat, creating a…
- LoRA (Low-Rank Adaptation)
- A parameter-efficient fine-tuning technique, introduced by Hu et al. in 2022, in which a large pretrained neural network is specialised by training only a pair of small low-rank matrices that modify s…
- Local Navigation (Local guidance, Fine-grained navigation)
- Navigation at the scale of a few metres, where the task is to bring a blind traveller into direct body-scale interaction with a specific landmark object — sitting in a particular chair, pressing an el…
- Local-First Software (Local-First)
- A software design philosophy, articulated by Kleppmann and colleagues in 2019, in which applications keep the user's primary data on local devices and treat cloud services as optional synchronization …
- Localization (Position Estimation, Indoor Localization, User Localization)
- Localization is the process of determining a user's position within an environment, typically using a combination of sensors such as GPS, inertial measurement units, BLE beacons, Wi-Fi signals, or com…
- Location Awareness (Location-Aware Computing, Location Sensing)
- The ability of a computing system to determine and respond to the physical location of a user or device, typically using GPS, Wi-Fi positioning, cellular triangulation, or other sensing technologies. …
- Location-Based Game (LBG, Location-Based Puzzle Game, LBPG, Pervasive Game)
- A location-based game (LBG) is a game whose gameplay depends on the player’s real-world physical location, typically determined via GPS, NFC, Bluetooth beacons, or QR codes. Examples include Geocachin…
- Location-Based Service (LBS, Location-Based Services)
- A software application or platform that uses geographic position data — from GPS, Wi-Fi, Bluetooth beacons, or other localization technologies — to deliver context-aware information or functionality t…
- Locked-In Syndrome (LIS, Pseudocoma)
- Locked-in syndrome is a rare neurological condition in which a person is fully conscious and cognitively aware but unable to move or speak due to complete paralysis of nearly all voluntary muscles, of…
- Locomotion (VR Locomotion)
- Methods by which users navigate and move through virtual environments in VR. Common locomotion techniques include free-roam (physical walking that maps to virtual movement), joystick-based continuous …
- Locomotion Technique (VR Locomotion, Virtual Travel Technique)
- A locomotion technique is a method for navigating or moving through a virtual environment in virtual reality (VR). Because physical space is limited and many users are seated, locomotion techniques si…
- LogMAR (Logarithm of the Minimum Angle of Resolution)
- A standardised scale for measuring visual acuity based on the logarithm (base 10) of the minimum angle of resolution, used in the Bailey-Lovie eye chart and widely adopted in clinical vision research.…
- Logical Control (Indirect Control)
- An interaction paradigm where the user accesses specific functions supported by an application indirectly, typically by selecting from a presented set of options rather than performing the action dire…