Today, global object-positioning is accomplished very precisely by GPS satellite technology. Access to this information is provided globally by widespread mobile devices with integrated GPS receivers from everywhere. On the other hand, mobile devices are connected to world-wide networks that ensure anytime access to application service (also web service) infrastructure based on application servers. Information everywhere at anytime is a key issue of pervasive computing. As a proof of concept that reflects a power of the pervasive computing, the application for drafting-detection in triathlon competitions was developed. This shows that the widespread mobile devices with GPS feature are appropriate for solving of real problems addressing the precise object-positioning.