Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Capacitive marker(also: Capacitive fiducial, Conductive marker)
- A conductive structure embedded in a physical object that registers as a touch point on a capacitive touchscreen, enabling the device to detect the object's position and orientation without cameras or external sensors. In accessible tactile graphics, capacitive markers printed…
- Fiducial Marker(also: ArUco Marker, Fiducial Tag)
- A visual pattern placed on an object or surface that can be detected and identified by computer vision systems to determine the object's position, orientation, and identity. Fiducial markers such as ArUco markers are commonly used in augmented reality and assistive technology…
- Shape Display(also: 2.5D Shape Display, Pin Display, Tactile Shape Display)
- A physical computing device consisting of a grid of motorised pins that can be raised and lowered to create dynamic tactile relief surfaces. Shape displays render digital 3D content as physical topographies that users can explore by touch, providing real-time haptic feedback…
- Tangible Technology(also: Tangible Interface, Tangible User Interface, TUI)
- Technology that connects physical objects to digital systems, allowing users to interact with computing through touching, manipulating, and moving real-world objects rather than through screens or keyboards. Tangible technologies are particularly valuable in accessibility…
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