Nonhanded

Nonhanded is a term used in design, ergonomics, and accessibility to describe tools, interfaces, or actions that do not require the user’s hands to operate. The concept covers hands-free control, ambidextrous devices, and input methods that depend on voice, gaze, head movements, or other nonmanual modalities. The aim is to increase usability for people with limited hand function and to provide flexible interaction options for all users.

Common nonhanded modalities include voice recognition, eye tracking, head or facial gestures, sip-and-puff or mouth-operated input, foot pedals, and wearable sensors. In software and consumer electronics, nonhanded design favors assistive options such as speech commands, gaze-based control, and switch-based interfaces in addition to traditional keyboard and mouse input.

Ambidextrous and nonhanded approaches seek to minimize dependence on handedness and can improve accessibility in workplaces, gaming, and everyday devices. Some systems integrate multiple modalities to allow seamless switching between hands-free and manual interaction.

Challenges for nonhanded design include ensuring accuracy, reducing latency, managing environmental noise, and avoiding user fatigue. Effective nonhanded design relies on clear feedback, robust error handling, and extensive user testing.

See also: accessibility, human-computer interaction, ambidexterity, hands-free devices.