Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Indoor Localization(also: Indoor Positioning, Indoor Positioning System, IPS)
- The problem of determining the precise location of a person or device inside a building, where GPS signals are weak or unavailable. Indoor localization is foundational for accessible wayfinding systems aimed at blind and low-vision travellers, who need to know their position…
- Indoor Positioning(also: Indoor Localization, Indoor Location)
- Technology that determines a person's location within an indoor environment where GPS signals are unavailable or unreliable. Indoor positioning systems use various technologies including BLE beacons, Wi-Fi signal strength, RFID tags, ultra-wideband radio, and computer vision.…
- Indoor Wayfinding(also: Indoor Navigation Wayfinding)
- The process of navigating within enclosed spaces such as buildings, airports, shopping centers, and hospitals. Indoor wayfinding presents unique accessibility challenges because GPS signals are unavailable indoors, and traditional wayfinding cues like signs and maps are visually…
- Inertial Sensor(also: IMU, Inertial Measurement Unit)
- A sensor device that measures acceleration, rotation, and orientation using accelerometers and gyroscopes, often combined with magnetometers. In assistive technology, inertial sensors are used to track the direction a user is facing and the movements of their head or body,…
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