Handcentric

Hand-centric is a term used to describe design, interaction, or analysis that centers the hand as the primary interface between a person and technology. It emphasizes how the hand's reach, grip, dexterity, and fatigue characteristics shape how tasks are performed.

In human–computer interaction, hand-centric design aims to reduce travel distance and cognitive load by aligning controls with natural hand postures, supporting one-handed or ambidextrous operation, and providing predictable tactile or haptic feedback.

Applications appear in ergonomics, consumer electronics, robotics, and assistive technology. Examples include input devices configured for minimal finger travel (such as ergonomic mice and thumb-accessible keyboards), gesture and touch interfaces that leverage palm or finger motion, and wearable or haptic devices that run with the hand rather than the arm.

Methodologically, hand-centric work relies on anthropometric data, task analysis, user testing, and motion studies to optimize layout, reachability, and comfort. It also considers variations in hand size, strength, and disability to improve accessibility.

Benefits often include improved efficiency, reduced fatigue, and enhanced accessibility. Critics caution that a hand-centric focus may neglect other modalities such as vocal or gaze controls, and may not accommodate users with limited hand function or with tasks requiring broader motor patterns. Designers should balance hand-centric considerations with overall usability and inclusive design.

See also: ergonomics, human–computer interaction, embodied interaction.