Glossary
Searchable terminology from accessibility, web standards, and related fields.
89 results found in input methods.
- Electromyography (EMG, Electromyogram)
- Electromyography (EMG) is a technique for measuring the electrical activity produced by muscles when they contract or are at rest. In accessibility and assistive technology, EMG sensors placed on the …
- Enhanced Area Touch (Area Touch, Expanded Touch Area)
- A touchscreen interaction technique that enlarges the effective touch point from a single pixel to a larger circular area, expanding both the motor space (the physical area the user needs to target) a…
- Eye Gaze (Gaze, Gaze Direction, Visual Gaze)
- The direction and focus of a person's eyes during visual attention, used both as a communication signal and as a measurable indicator of cognitive processing. In sign language communication, eye gaze …
- Eye Gaze Communication (Gaze-Based Communication, Eye Tracking Communication)
- The use of eye movements and gaze direction as a means of communication, either naturally (making eye contact, looking at objects to indicate interest) or through technology (eye-tracking systems that…
- Eye Tracking (Gaze Tracking)
- Technology that detects and follows the movement of a user's eyes, enabling gaze-based interaction, attention monitoring, and foveated rendering. In accessibility contexts, eye tracking serves as an a…
- Eye-Gaze Control (Gaze Control, Eye-Controlled Interface, Gaze-Based Input)
- An input method that uses eye-tracking technology to detect where a user is looking and translates gaze direction into control commands for computers, wheelchairs, communication devices, and other sys…
- Eyelid Gesture (Eyelid Interaction, Eyelid-Based Input)
- An eyelid gesture is a deliberate eye movement used as an input method for controlling digital devices, involving intentional opening and closing of one or both eyelids in specific patterns, sequences…
- Face Tracking (Facial Tracking, Face Detection and Tracking)
- A computer vision technology that detects and follows the position and movement of a user's face in real time using a camera or depth sensor. In accessibility, face tracking enables hands-free compute…
- Facial Action Unit (Action Unit, AU, FACS Action Unit)
- A component of the Facial Action Coding System (FACS) that represents a specific movement or position of facial muscles. Each action unit corresponds to a distinct facial movement, such as raising the…
- Finger Tracking (Fingertip Tracking, Finger Detection, Hand Tracking)
- Computer vision or sensor-based technology that detects and follows the position and movement of a user's fingers in real-time. In accessibility applications, finger tracking enables hands-free intera…
- Fitts's Law (Fitts Law)
- Fitts's law is a predictive model of human movement that describes the time required to rapidly move to a target area as a function of the distance to the target and the target's size. Widely used in …
- Foot-Based Interaction (Foot Input, Foot Gesture Interaction)
- An interaction technique that uses foot movements and gestures as input for controlling digital devices. Foot-based interaction is particularly relevant for people with upper body motor impairments wh…
- 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-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…
- Gesture Input (Gesture Recognition, Gesture-Based Interaction)
- An input method that uses physical movements of the body — typically hands, fingers, arms, or head — to interact with digital systems. Gesture input includes touchscreen gestures (swipes, taps, pinche…
- 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 Typing (Swipe Typing, Trace Typing, Glide Typing, Shape Writing)
- A text entry method on touchscreen devices where the user enters a word by continuously gliding their finger from letter to letter on a virtual keyboard without lifting it, rather than tapping each ke…
- Gesture-Based Interface (Gestural Interface, Gesture Recognition Interface)
- An interaction system that interprets human gestures—such as hand movements, body poses, or finger motions—as input commands. Gesture-based interfaces can use cameras, accelerometers, touch surfaces, …