Personal Server was implemented by means of a PDA (HTC X7500) running Windows Mobile 5 as operating system. The software working on PDA was written by using C# from Microsoft Visual Studio 2008. The software displays temporal waveform of physiologic signals, numerical values for monitored parameters and the status of the device (the battery voltage and distance of the device from the PDA). The distance is represented in percent of 100 computed based on RSSI (received signal strength indication measured on the power present in a received radio signal).