The Remote Upper Limb Tracking System (RULTS) could help the patient in rehabilitation. The RULTS has the ability to alert the user when the angle of upper limb exceeds safety angle to keep the upper limb healthy especially for the elders. Our future work will be addressed to apply the ideas in tracking movements of real human arms in 3D form, it is to improve the accuracy of localization of real human arm movements. To increase the functionality we intend to include visibility coding optimization, the simultaneous display of multiple wireless sensor location and multiple effectiveness human...