The New York Police Department is expanding a gunfire-detection system that notifies officers in real time when and where shots are fired , Mayor Bill de Blasio announced . De Blasio said the NYPD will deploy the system , known as ShotSpotter , throughout precincts in Brooklyn and the Bronx . ShotSpotter utilizes antennas and acoustic detectors to pinpoint shooting locations . The crime center of a police headquarters immediately receives the information , which they can then send out to officers already near the area . On Monday Mayor Bill de Blasio announced the New York Police Department is expanding a gunfire-detection system that notifies officers in real time when and where shots are fired . ShotSpotter 's data can also detail for police how many shooters were present and how many shots were fired at the location . Seven units will be deployed in Brooklyn and 10 in the Bronx . The NYPD plans to eventually incorporate ShotSpotter 's alerts into mobile devices , which will allow information to be sent directly to officers ' phones and tablets . The system has been tested by the NYPD since 2011 . In December it registered the shots that killed police officers Wenjian Liu and Rafael Ramos in Brooklyn , according to ABC 7 . On Monday shots were picked up within an hour of the the system 's activation in the Bronx , according to NYPD deputy commissioner Jesse Tisch . Three shots were fired and they were not called in to 911 , CBS New York reported . According to ShotSpotter 's website , less than one in five shooting incidents are reported to 911 . ShotSpotter utilizes antennas and acoustic detectors to pinpoint shooting locations . The crime center of a police headquarters immediately receives the information , which they then send out to officers in the area . When shootings are called in , the information given is often inaccurate , wasting valuable time and putting the safety of officers and the public at risk , the site said . During a press conference on Monday , de Blasio said ShotSpotter will 'transform the way the NYPD responds to gunshot activity in our neighborhoods . ' 'ShotSpotter will help protect our residents , our communities and our police officers , ' he said . Systems similar to ShotSpotter have already been employed in Newark , New Jersey , Atlantic City and Washington , according to Bloomberg News . ShotSpotter will be activated in Brooklyn next week .
NYPD will deploy the ShotSpotter system throughout Bronx and Brooklyn . ShotSpotter uses antennas and acoustic detectors to pinpoint locations . Can detect how many shooters are present and how many shots were fired . Police headquarters receive the information in real time and can then send data to officers already near the area . Ten units will be deployed in the Bronx and seven in Brooklyn .