Infrared technology (IR) has also been employed for pedestrian localization such as the system proposed by [3]. It includes three main units: a vest that contains a 4x4 micro motors grid which delivers hap tic guidance signals on the back of the user, a laptop for itinerary planning and infrared receiver and transmitters to localize the person. For a consistent detection of infrared radiation, the transmitters were mounted so they cover the whole trajectory to be traveled and the [R receiver was held in height so that the [R signals can be easily detected.