Bimanual Exploration

The use of both hands in coordinated roles to perceive an object or space by touch. In blind and low-vision users, bimanual exploration is typically asymmetric: one hand (often the non-dominant) serves as a spatial anchor holding a frame of reference while the other hand (often the dominant) performs fine-grained tracing and feature inspection. Prior research has shown that BLV users spend more than 80% of tactile-graphic exploration time using both hands, and that designing interactive or camera-based assistive systems around bimanual coordination — rather than forcing users to lift both hands to aim a device — materially improves speed, accuracy, and cognitive load.