Users want a simple, intuitive and graphically attractive interface. On the other hand, it is necessary to change dynamically the user's experience as they use what best viewing area of the device. The biomedical data are not all the latest knowledge in the area. Our work focuses on exploring the possibilities and the revelation of any deficiencies in the currently used procedures and technologies. The main area of interest of our biotelemetric system is to provide solution which can be used in different areas of health care and which will be available through PDAs, web browsers or desktop clients. In paper we deals with a problem of visualization of measured ECG signal on mobile devices in Real Time as well as with a solution how to solve a problem of unsuccessful data processing on desktop or server.