Glossary

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Back Tap(also: Back Tap Gesture)

An iOS accessibility feature that allows users to trigger actions by tapping on the back of their iPhone two or three times. Back Tap can be configured to activate shortcuts, accessibility features, or system functions without requiring precise touchscreen interaction. For…

Bimanual Interaction(also: Two-Handed Interaction)

Interaction techniques in computing and VR that require the coordinated use of both hands simultaneously, such as holding two controllers, performing gestures with both hands, or operating dual joysticks. Bimanual interaction presents significant accessibility barriers for users…

Biometric Control(also: Biometric Input, Physiological Control Interface)

The use of measurable biological signals from the human body — such as brain waves (EEG), skin conductance (galvanic skin response), muscle electrical activity (EMG), heart rate, or eye movements — as input channels for controlling computers and assistive technology devices.…

Braille Input(also: Braille Keyboard Input, Braille Screen Input)

A text entry method that allows users to type characters using Braille code on a device, rather than a standard QWERTY keyboard. On touchscreen devices, Braille input typically maps finger taps or gestures to the six dots of a Braille cell, enabling blind users who know Braille…

Brain-Computer Interface(also: BCI, Brain-Machine Interface, BMI)

A technology that enables direct communication between the brain and an external device by detecting and interpreting neural activity, typically through electroencephalography (EEG) or electromyography (EMG). In accessibility contexts, BCIs allow people with severe motor…

Brain-Computer Interface(also: BCI, Brain-Machine Interface, BMI)

A direct communication pathway between the brain and an external device that enables users to control computers, prosthetics, or other systems using neural signals rather than physical movement. BCIs are particularly significant for people with severe motor impairments such as…

Brain-Computer Interface(also: BCI, Brain-Machine Interface, BMI)

A technology that enables direct communication between the brain and an external device by detecting and interpreting neural signals. BCIs can use invasive methods (implanted electrodes) or non-invasive approaches (EEG headsets). In accessibility contexts, BCIs allow people with…

Breath Control(also: Sip-and-Puff Control, Pneumatic Input)

An assistive technology input method that uses breath pressure — blowing or sipping through a sensor — to control a computer, device, or instrument. Breath control is particularly valuable for individuals with severe motor disabilities who retain respiratory function, such as…

Breathing Input(also: Breath-based Input, Puff Input)

An alternative computer input method that uses deliberate breath actions — such as puffing, blowing, or inhaling — detected by a microphone or pressure sensor as control signals for navigating interfaces and selecting items. Breathing input is designed for people with severe…

Bubble Cursor(also: Dynamic Cursor, Area Cursor)

An enhanced pointing technique that dynamically resizes the cursor's activation area to make target selection easier, particularly for users with motor impairments. The bubble cursor expands to encompass the nearest target, effectively enlarging the clickable region without…

10 results.