>The detection system, which triangulates sound picked up by acoustic sensors placed on buildings, utility poles and other structures, is part of a wave of tech

>The detection system, which triangulates sound picked up by acoustic sensors placed on buildings, utility poles and other structures, is part of a wave of technological advances — among them, license plate scanners, body cameras, Global Positioning System trackers and hand-held fingerprint identifiers This technology also happens to be very useful for domestic counter-insurgence, something of interest to an economically polarized state during a time of economic transformation.