Glossary

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Hand Tracking(also: Gesture Tracking, Hand Gesture Recognition)

A technology that detects and tracks the position, orientation, and movements of a user's hands and fingers without requiring physical controllers, typically using cameras and computer vision algorithms. In extended reality, hand tracking enables hands-free interaction through…

Hands-Free Interaction(also: Hands-Free Computing, No-Hands Input, Hands-free)

The ability to operate digital devices and interfaces without using the hands, typically through voice commands, eye tracking, head movements, foot controls, or brain-computer interfaces. Hands-free interaction is critical for users with upper limb motor impairments,…

Hands-Free Interface(also: Hands-Free Computing, Hands-Free Input)

A hands-free interface is a computer interaction system that does not require the use of hands or fingers, enabling users to control software through alternative input channels such as head movements, eye gaze, voice commands, foot pedals, or breath-controlled switches. These…

Haptic Input(also: Haptic Interaction, Touch Input)

Haptic input refers to interaction methods that use the sense of touch to communicate information between a user and a computer system. This includes devices such as data gloves, force-feedback controllers, and touch-sensitive surfaces that detect hand movements, gestures, and…

Head Pointing(also: Head-Controlled Pointing, Head Mouse)

Head pointing is an alternative input method that maps head movements to cursor position on a computer screen, enabling hands-free mouse control. The user moves their head to direct the cursor, with the system translating head orientation or position into screen coordinates.…

Head Tracking(also: Head Movement Tracking, Head-Controlled Input, Head Tracker)

An assistive technology input method that translates natural head movements into computer cursor control or other input actions. Head tracking systems use cameras, infrared sensors, or depth sensors to detect head position and orientation, allowing users with limited or no hand…

Head-based Pointing(also: Head Tracking, Head Mouse, Head-controlled Input)

An alternative input method that allows users to control an on-screen cursor by moving their head, typically tracked via a camera, infrared sensor, or inertial measurement unit. Head-based pointing is particularly valuable for people with motor impairments who cannot use…

Humming Interface(also: Control-by-Humming, Hum-Based Interface)

A human-computer interaction method that uses hummed pitch patterns as control signals for operating devices. In a humming interface, a pitch detection algorithm analyses the user's hummed input, segments it into discrete notes based on pitch contour (rising, falling, or flat),…

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