Abstract: System and method for monitoring and tracking of non cooperative devices in a communication network that includes a plurality of radio signal-enabled devices communicating with each other includes: monitoring, by each of the plurality of radio signal-enabled devices, interference signals and frequencies of the interference signals from a plurality of non-cooperative devices that are not coupled to the communication network; receiving interference signals and the frequencies from the plurality of radio signal-enabled devices; recording a power level for each of the received interference signals; identifying signals of interest and filtering out signals of no interest responsive to the power levels; detecting a unique device identification for a non-cooperative user device not coupled to the communication network, responsive to the identified signals of interest; and tracking the non-cooperative user device responsive to the identified signals of interest and the predetermined locations of the plurality of radi

Abstract: System and method for monitoring and tracking of non cooperative devices in a communication network that includes a plurality of radio signal-enabled devices communicating with each other includes: monitoring, by each of the plurality of radio signal-enabled devices, interference signals and frequencies of the interference signals from a plurality of non-cooperative devices that are not coupled to the communication network; receiving interference signals and the frequencies from the plurality of radio signal-enabled devices; recording a power level for each of the received interference signals; identifying signals of interest and filtering out signals of no interest responsive to the power levels; detecting a unique device identification for a non-cooperative user device not coupled to the communication network, responsive to the identified signals of interest; and tracking the non-cooperative user device responsive to the identified signals of interest and the predetermined locations of the plurality of radi

Abstract: This invention improves the quality of detection and speeds up the search for threats that might be hidden in shoes worn by airport passengers and people in other environments as well as threats hidden in objects like packages, by automatically scanning for these threats when the people walk by or objects are placed in sensors capable of detecting the threats. These sensors are based primarily on an adequate implementation of the quadrupole resonance effect for threat material detection, complemented with sensors that detect the presence of conducting materials and auxiliary elements that provide the location of the threats, control the operation of the sensors and improve their effectiveness.