Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 122 of 333
- Finger-Worn Camera (Ring camera, Finger-mounted camera, Finger assistive camera)
- A miniature camera attached to a finger, typically via a ring or thimble-like housing, that captures images from the hand rather than from the head or chest. In accessibility contexts, finger-worn cam…
- Finger-mounted Camera (Fingertip Camera, Wearable Finger Camera)
- A small camera device worn on the finger that enables direct, tactile interaction with printed documents for blind and low-vision users. Unlike handheld or phone-based cameras, finger-mounted systems …
- Fingerspelling (Manual alphabet, Dactylology)
- A method of spelling out words letter by letter using hand shapes, used within sign languages to represent proper nouns, technical terms, or words that lack a dedicated sign. Each letter of the writte…
- Fingerspelling (Manual Alphabet, Dactylology)
- A method of spelling out words letter-by-letter using hand positions that represent each letter of the alphabet. In American Sign Language, fingerspelling uses a one-handed manual alphabet and is prim…
- Fingertip Deflection
- A haptic guidance technique in which a wearable device gently pulls or tilts the fingertip in a chosen direction (abduction, adduction, flexion, or extension) to bias arm motion toward a target during…
- Finite State Machine (FSM, State Machine)
- A computational model that can exist in exactly one of a finite number of states at any given time, transitioning between states in response to specific inputs or events. In assistive technology, fini…
- Fintech (Financial Technology)
- An umbrella term for software and digital-service innovations in the financial sector, including online and mobile banking, payments (e.g., Apple Pay, PayPal), budgeting apps, investment platforms, di…
- Fire Vox (FireVox)
- An open-source, cross-platform screen reader implemented as a Firefox browser extension, created by Charles Chen as part of the CLC-4-TTS Suite. Fire Vox was notable as one of the earliest assistive t…
- First-mile last-mile (First and last mile, FMLM)
- The beginning and end segments of a public transit journey — travelling from one's origin to the transit stop (first mile) and from the destination stop to the final destination (last mile). These seg…
- Fisheye View (Fisheye Lens, Graphical Fisheye)
- A focus+context visualization technique, introduced by Furnas, that magnifies a region of interest while progressively compressing surrounding context — analogous to a fisheye camera lens. Used in tre…
- Fitness Tracker (Activity Tracker, Wearable Fitness Device)
- A wearable electronic device that monitors and records physical activity metrics such as steps taken, distance covered, calories burned, and heart rate. Most commercial fitness trackers use step-count…
- Fitts' Law (Fitts Law)
- A predictive model of human movement in human-computer interaction that states the time required to move to a target area is a function of the distance to the target and the size of the target. Specif…
- Fitts' Law (Fitts Law)
- A predictive model of human movement that describes the time required to move to a target as a function of the target's size and distance from the starting point. Formulated by Paul Fitts in 1954, the…
- Fitts' Law (Fitts Law)
- 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. Formulated by psychologist Pau…
- 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 …
- Fitts's Law (Fitts Law)
- 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 size of the target. Formulated by Paul Fitts …
- Fitts's Law (Fitts Law, Fitts' Law)
- 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. Smaller and more distant targe…
- Fixation (Visual Fixation, Gaze Fixation)
- A period during which the eyes remain relatively stationary on a specific point or area, typically lasting 100 to 600 milliseconds. During fixations, the brain processes the visual information at the …
- Fixation Duration (Fixation Time, Gaze Duration)
- The length of time the eye remains relatively still on a specific point in a visual display during reading or visual processing. In eye-tracking research, fixation duration is a key metric for measuri…
- Fixation Problem (Reading Fixation Difficulty, Visual Fixation Issue)
- A difficulty in maintaining stable visual focus on a specific point or line of text during reading. People with fixation problems may lose their place frequently, skip lines, or re-read the same passa…