... identified:eavesdropping devices. Telephone eavesdropping, digital eavesdropping, tracking, vehicle eavesdropping, wireless pinholecameras, wired cameras, electrical appliances and other sources...Can effectively ... live radio signals10) Detect more covert videotaping 5.8GHz wireless camera, wireless eavesdropping devices, wireless monitor the signal11) Check hotels, toilets, entertainment venues ...