Abstract: A computerized non-visible signal based surveillance system including a computerized subsystem for associating RF signals in a transactional environment, the computerized subsystem including a sensor configured to sense a plurality of RF signals emitted from within a predetermined range of the sensor at points in time and a computerized signal associator configured to receive outputs from the sensor and provide an output which associates at least some of the plurality of RF signals and generate a unique RF signal-based identifier and an alert generating subsystem configured to employ the unique RF signal-based identifier for identifying an unauthorized person or an unauthorized device based at least in part on the unique RF signal-based identifier. There is even further provided a surveillance method including associating RF signals and ascertaining a presence of an unauthorized person or an unauthorized device based at least in part on the unique RF signal-based identifier.

Abstract: A computerized system for associating RF signals, the system including at least one sensor configured to sense a plurality of RF signals at at least a plurality of points in time and a computerized associator receiving outputs from the at least one sensor and providing an output which associates at least some of the plurality of RF signals with at least one unique multiple RF signal-based identifier.

Abstract: A computerized system for associating RF signals, the system including at least one sensor configured to sense a plurality of RF signals at at least a plurality of points in time and a computerized associator receiving outputs from the at least one sensor and providing an output which associates at least some of the plurality of RF signals with at least one unique multiple RF signal-based identifier.

Abstract: A computerized system for associating RF signals, the system including at least one sensor configured to sense a plurality of RF signals at at least a plurality of points in time and a computerized associator receiving outputs from the at least one sensor and providing an output which associates at least some of the plurality of RF signals with at least one unique multiple RF signal-based identifier.

Abstract: A computerized system for associating RF signals, the system including at least one sensor configured to sense a plurality of RF signals at at least a plurality of points in time and a computerized associator receiving outputs from the at least one sensor and providing an output which associates at least some of the plurality of RF signals with at least one unique multiple RF signal-based identifier.