Gestural Interaction

A mode of human-computer interaction in which users control systems through movements of the body — hands, arms, head, eyes, or whole body — captured by sensors such as accelerometers, cameras, IMUs, or depth sensors. Gestural interaction supports hands-free or low-force control that can be valuable for users who cannot use keyboards or touchscreens reliably, but generic recognizers built around designer-chosen gestures can exclude users whose movement vocabulary differs. Accessible gestural interaction typically requires per-user calibration, tolerance for variability, and ability-based or personalised mappings rather than fixed command sets.