说明：  This chapter discusses equipment positioning, which has a large range of potential applications from per-user advertisement, through elderly-care until cop security. We propose a general system based on passive measurements that, in contrast to currently available solutions using one specific technology (e.g., Wi-Fi), runs in multi-technology environment. This means that it is possible to position radio equipment using any of the radio technologies: Wi-Fi, Bluethooth, RFID and other technologies based on IEEE 802.15.4 operating in the 2.4 GHz band. Thanks to that, our platform will significantly increase the number of monitored users. Service of abovementioned technologies will be implemented by means of a common hardware platform, using time multiplex in the radio space.