Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Indoor Navigation(also: Indoor Wayfinding, Indoor Positioning)
- Technologies and systems that help users find their way within indoor environments such as museums, shopping centers, airports, and public buildings where GPS signals are unreliable. Indoor navigation systems for blind and low vision users may use Bluetooth beacons, Wi-Fi…
- Indoor Positioning System(also: IPS)
- A technology system that determines the location of people or objects inside buildings where GPS signals are unavailable or unreliable. Indoor positioning systems use various technologies including Wi-Fi fingerprinting, Bluetooth Low Energy (BLE) beacons, ultra-wideband (UWB),…
- Inertial Sensing(also: IMU sensing, Inertial measurement)
- The use of accelerometers, gyroscopes, and magnetometers — often built into smartphones and wearable devices — to measure motion, orientation, and direction of movement. In accessibility applications, inertial sensing enables dead reckoning for indoor navigation where GPS is…
- Inertial Sensors(also: IMU, Inertial Measurement Unit)
- Electronic sensors that measure motion and orientation, typically including accelerometers (measuring acceleration/tilt), gyroscopes (measuring rotation), and magnetometers (measuring magnetic field/compass heading). In accessibility applications, inertial sensors enable indoor…
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