Glossary

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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 Control(also: Head-Controlled Interface, Head Mouse, Head Pointer)

An alternative computer input device that translates head movements into cursor movements on screen, enabling people who cannot use their hands or arms to operate a computer. Head control systems typically use ultrasonic sensors, infrared tracking, or camera-based systems to…

Head Pointer(also: Head Mouse, Head Tracking Device)

An assistive technology input device that translates head movements into cursor movements on screen, allowing people who cannot use their hands or arms to control a computer. Head pointers can be physical devices (a stick or stylus mounted on a headband used to press keys) or…

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 Wand(also: Head Pointer, Head Stick, Mouth Stick)

A head wand is an assistive input device consisting of a pointer attached to a headband or held in the mouth, allowing people with limited or no hand and arm function to operate a keyboard, touchscreen, or other controls using head movements. Head wands are commonly used by…

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…

HeadMaster(also: HeadMaster Plus)

An early head-pointing assistive technology device developed by Prentke Romich Company that translates head movements into mouse cursor movements on screen. The HeadMaster uses an ultrasonic sensor worn on the head (typically mounted on a headband or glasses) to track head…

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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