Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Force Field(also: Haptic Force Field, Virtual Force Field)
- In haptic interface design, a computational model that defines attractive or repulsive forces at each point in a two-dimensional workspace, used to represent graphical user interface elements as tactile objects. When a user moves a haptic pointing device through a force field,…
- Haptic Pointing Device(also: Force Feedback Mouse, Haptic Mouse, Force Feedback Pointing Device)
- An input device that combines the pointing functionality of a mouse or stylus with the ability to generate physical forces that the user can feel through their hand. Unlike a standard mouse that provides no tactile information about screen content, a haptic pointing device can…
- Icon(also: Icons, UI Icon)
- A small graphical symbol used in graphical user interfaces (GUIs) to represent an application, file, function, or object. Icons rely on visual recognition rather than text reading, which can be both an advantage and a barrier for users with visual impairments depending on…
- Mercator
- A research screen reader system developed at the Georgia Institute of Technology by W. Keith Edwards and Elizabeth Mynatt for the X Window System on Unix workstations. Mercator pioneered the approach of providing access to graphical user interfaces at the semantic level —…
- Virtual Wall(also: Haptic Wall, Haptic Boundary)
- A simulated physical boundary in a haptic interface that the user can feel through a force-feedback device, modelled as a massless plate backed by a spring with stiffness and a damper with viscosity. Virtual walls are used to represent the edges and boundaries of graphical user…
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