Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Dead Reckoning(also: Inertial Navigation, Pedestrian Dead Reckoning, PDR)
- Dead reckoning is a navigation technique that estimates a user's current position by tracking their movement from a known starting point, using data from inertial sensors such as accelerometers and gyroscopes. In accessible wayfinding applications for blind and low-vision users,…
- Digital Compass(also: Electronic Compass, Magnetometer)
- An electronic sensor that detects the Earth's magnetic field to determine the direction a person or device is facing, providing heading information in degrees or cardinal directions. In assistive technology for blind and visually impaired users, digital compasses are integrated…
- Directional Guidance(also: Navigation Guidance, Orientation Feedback)
- Real-time feedback that helps users maintain correct positioning or navigate toward a target, commonly provided through audio cues (such as pitch changes) or haptic signals (such as vibration patterns). In accessible reading systems, directional guidance indicates when a user…
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