Long Island cops are using an $800,000 acoustic gunshot tracking system that allows officers to almost immediately pinpoint the locations of shootings from a data center miles away. The so-called ShotSpotter system transmits the sound of gunfire using microphones and wireless sensors to a police computer and triangulates the scene of a shooting to within 80 feet — though police sources in the “the gun corridor” between Roosevelt and Uniondale in Nassau County say it is often more accurate than that, sometimes leading cops exactly to the spots where shell casings were found. more ›