Glossary
Searchable terminology from accessibility, web standards, and related fields.
840 results found in assistive technology.
- Free-Space Haptics (Mid-Air Haptics, Contactless Haptics)
- Haptic feedback technology that applies physical forces or tactile sensations to a user without requiring contact with a mechanical device or surface. Unlike traditional haptic systems that use physic…
- Frequency shifting (Frequency transposition, Frequency lowering, Spectral shifting)
- An audio processing technique that moves sounds from one frequency range to another, typically shifting high-frequency sounds into lower frequency ranges that a person with high-frequency hearing loss…
- Functional Assessment (Functional Capability Assessment, FA)
- A systematic process for evaluating an individual's ability to perform specific tasks or activities, focusing on what a person can actually do rather than their medical diagnosis. In assistive technol…
- Functional Electrical Stimulation (FES)
- A rehabilitation technique that uses low-level electrical currents to activate paralyzed or weakened muscles in people with neurological conditions such as spinal cord injury, stroke, or multiple scle…
- GPS (Global Positioning System, GNSS, Satellite Navigation)
- The Global Positioning System (GPS) is a satellite-based navigation system that provides location and time information to receivers on Earth. For accessibility, GPS is foundational to wayfinding apps …
- GPS Navigation (Satellite Navigation, GNSS Navigation)
- GPS (Global Positioning System) navigation uses satellite signals to determine a device's location and provide directions to a destination. For people with disabilities, GPS navigation apps on smartph…
- GPS Tracking (GPS Monitoring, Electronic Tracking, Location Tracking)
- The use of Global Positioning System technology to monitor and record the geographic location of a person or device in real time. In accessibility and dementia care contexts, GPS tracking is used in s…
- Game-Based Therapy (Therapeutic Gaming, Serious Games for Rehabilitation, Gamification of Therapy)
- The use of video games and interactive digital experiences as therapeutic interventions, particularly for physical or cognitive rehabilitation. Game-based therapy leverages engaging gameplay mechanics…
- Gaze (Eye Gaze, Gaze Direction, Point of Regard)
- The direction in which a person is looking, typically measured as the point of visual fixation on a display or in a physical environment. Gaze tracking technology captures where users look and for how…
- Gaze Input (Eye Tracking Input, Gaze-Based Interaction, Eye Control)
- An input method that uses eye-tracking technology to detect where a user is looking, enabling interaction with digital interfaces through eye movements such as fixation (dwelling on a target), smooth …
- Gaze Interaction (Gaze-Based Interaction, Gaze Input, Eye Gaze Control)
- Gaze interaction is a method of controlling computers and devices by tracking where a person is looking on the screen. Using eye-tracking technology, the system detects the user's point of gaze and tr…
- Gaze Tracking (Eye Tracking, Eye Gaze Tracking)
- Technology that measures and records eye movements to determine where a person is looking, for how long, and in what pattern. In low-vision research and rehabilitation, gaze tracking can reveal visual…
- Gaze Typing (Eye Typing, Gaze-Based Text Entry, Eye-Typing)
- A text input method that uses eye tracking technology to allow users to type by looking at keys on a virtual on-screen keyboard. The most common technique is dwell-based selection, where the user fixa…
- Gaze-Based Interaction (Gaze Input, Eye-Gaze Interaction, Gaze Control)
- An interaction method where users control digital interfaces by directing their visual gaze at on-screen targets, typically detected through eye tracking or head orientation tracking. In accessibility…
- Geographic Information System (GIS)
- A system for capturing, storing, analyzing, and displaying geographically referenced spatial data. In accessibility, GIS technology underpins navigation and wayfinding tools for blind and visually imp…
- Gestural Interface (Gesture-Based Interface, Gestural Controller)
- An input device or system that interprets body movements, hand gestures, or physical expressions as control signals for digital systems. In accessibility and music contexts, gestural interfaces are pa…
- Gesture Input (Gestural Input, Gesture-Based Input)
- A form of human-computer interaction where users perform physical movements—such as swipes, taps, pinches, or mid-air hand motions—to issue commands or provide input to a digital device. Gesture input…
- Gesture Recognition (Gesture Detection)
- The computational process of identifying and interpreting human gestures—typically hand, arm, or body movements—using sensors and machine learning algorithms. Gesture recognition systems analyze data …
- Gesture-based interaction (Gestural interface, Touchless interaction)
- An interaction modality where users control technology through body movements, hand gestures, or postures detected by sensors such as depth cameras, rather than through traditional input devices like …
- Global Public Inclusive Infrastructure (GPII)
- A framework and set of technologies designed to allow people with disabilities to automatically have their accessibility preferences and settings applied across any device, platform, or service they e…