Glossary

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Haptic Feedback(also: Tactile Feedback, Haptics)

Technology that communicates information through the sense of touch, using vibrations, pressure, or motion applied to the user's body. In accessibility, haptic feedback provides a non-visual, non-auditory channel for conveying alerts, navigation cues, or interface responses —…

Haptic Glove(also: Data Glove, Tactile Glove, Wearable Haptic Device)

A wearable device worn on the hand that provides tactile feedback through vibration motors, piezoelectric actuators, pin arrays, or other mechanisms embedded in the fingers and palm. In accessibility research, haptic gloves have been explored for several applications: enabling…

Haptic Wearable(also: Haptic Wearable Device, Wearable Haptic Technology)

A body-worn electronic device that communicates information through touch sensations such as vibration, pressure, or temperature changes. In accessibility contexts, haptic wearables can serve as assistive technologies that convey information through tactile channels when visual…

Head-Mounted Display (HMD)(also: HMD, Head-Mounted Display, Smart Glasses)

A display device worn on the head that places visual content in front of one or both eyes. Head-mounted displays include AR smart glasses (like Vuzix Blade), VR headsets, and mixed reality devices. In accessibility applications, HMDs can present captions, sign language…

Head-mounted display(also: HMD, Smart glasses, Head-worn display)

A wearable device that positions a display in front of one or both eyes, either overlaying digital content onto the real world (optical see-through) or replacing the visual field with a camera-captured and digitally processed view (video see-through). For people with low vision,…

Hearable(also: Smart Earbud, Smart Earphone)

A class of in-ear or over-ear wearable devices that combine audio playback with one or more sensors and on-device computing - microphones for ambient audio capture, inertial sensors, biosensors, and machine-learning accelerators - enabling features beyond passive listening.…

HoloLens(also: Microsoft HoloLens)

A self-contained, wearable mixed reality headset developed by Microsoft that overlays interactive holograms onto the user's real-world environment. HoloLens uses spatial mapping, gaze tracking, gesture recognition (air-tap), voice commands, and a physical clicker for…

Human Activity Recognition(also: HAR, Activity Recognition)

A field of machine learning and ubiquitous computing that uses sensor data — typically from accelerometers, gyroscopes, and other sensors in smartphones, smartwatches, or other wearable devices — to automatically identify and classify physical activities performed by a person.…

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