Plainfield, New Jersey is yet another community to install gunshot detectors. I don’t honestly have much of a problem with this technology, as if I have to fire a gun within a city’s limits, I want the police showing up quickly. But does it actually work? I’ve yet to hear these systems revolutionizing police work, and their deployment, as best I can tell, has been pretty limited. New Jersey law enforcement seems to be keen on them, however. My guess is the system probably provides a lot of false positives, and doesn’t buy you much in terms of crime prevention for the cost. Cities would probably do better to spend the money on more police.
UPDATE: Interesting study:
Police response times to technology-generated reports of gunfire were compared to response times to citizen-generated reports both before and during the test period. For the most part, there was little difference between response times to technology-generated reports of gunfire during the test period and response times to citizen-generated reports before the test period. However, the mean response time to citizen-generated reports of gunfire during the test period (about 30 minutes) was about 30 percent less than the mean response time to technology-generated reports (about 45 minutes). Nonetheless, the overall mean response time during the test period (to the technology- and citizen-generated reports combined) was about 41 minutes, just 2 minutes longer than the mean response time before the test period (to citizen-generated reports only). Researchers concluded that using the technology did not change in any substantial way the speed with which the police responded to reports of gunfire.
Also:
There are two possible explanations for this significant increase in police workloads: First, gunshot detection technology may generate some false alerts. Given the design of the evaluation and the relatively early stage of this technology’s development, this first possible explanation could not be explored in more detail. Second, Dallas may have a high rate of unreported gunfire, at least in the Oak Cliff neighborhood; if so, this finding could have significant ramifications for future crime analysis and crime prevention activities that seek to control the random gunfire problem in Dallas.
Given that, it seems to me this technology is a net negative, if it’s not resulting in a better response and is consuming police resources. Yet the conclusion is still relatively positive. But then again, our society likes easy solutions to complex problems, so I guess it’s not surprising.