A system for exchanging GPS or other position data between devices for purposes of group activities, child location monitoring, work group coordination, dispatching of employees etc. The coating process includes providing a turbine component, applying a coating repellant to a predetermined region of the turbine component, and depositing a coating material on the turbine component. When the rear wheels of the stroller are detached, and when the stroller is folded to occupy less space in packing, the U-shaped rods are positioned in the folded position to not cause increase of dimensions to the packing case.