Yes,  all our devices are equipped with three separate location technologies, our highly accurate GPS is great provided the asset is not hidden from the sky or a GPS jammer is in use. In these cases we use a second technology layer of GSM mapping techniques including "Timing Advance" and mobile cell site triangulation. This GSM positioning method helps us target an approximate search location map of about 50 - 300 metres in built up urban areas or up to 3 KM in more rural locations. 

 

We then enable a secret radio transmitter, the signals can penetrate concrete and irradiate out of shipping containers and this can then be detected. Our operatives or the police will use a handheld radio signal direction receiver tuned to match the unit frequency to guide personnel to the tracking device with an accuracy of less than 1 metre.