Bimanual coordination is crucial for many daily activities, but it can be impaired by central nervous system injuries, leading to difficulties in daily tasks. Rehabilitation often focuses on recovering a single limb, neglecting hand coordination. Bimanual deficits are rarely assessed clinically, and evaluation scales do not adequately quantify spatiotemporal coordination. During bimanual activities, hand movements synchronize both temporally and spatially, adjusting to perform tasks with different levels of difficulty and trajectories.