The NYPD has spent $54 million on ShotSpotter gunshot detection technology over the past nine years while the system has consistently failed to deliver results, generating false alerts at a rate of 80-92% and deploying officers to locations where no shooting actually occurred. A December 2024 report from the Brooklyn Defenders revealed that this massive expenditure has produced almost no meaningful public safety benefit—with only a 16.57% confirmation rate over the nine-year period—while simultaneously concentrating surveillance in predominantly Black and Latino neighborhoods. The situation has triggered class action litigation and official pushback from New York City’s Comptroller, who refused to register a proposed $21.8 million three-year contract extension in early 2025, citing procurement violations and documented discrimination.
Beyond the raw financial waste, the ShotSpotter program exemplifies how well-intentioned law enforcement technology can become a tool for disproportionate surveillance and over-policing. Residents in predominantly Black neighborhoods are 3.5 times more likely to have police officers dispatched to them based on unconfirmed ShotSpotter alerts compared to residents in predominantly white neighborhoods—meaning they bear the burden of false alerts without the promised public safety benefits.
Table of Contents
- How Did the NYPD Waste $54 Million on a Gunshot Detection System That Doesn’t Work?
- What Evidence Shows ShotSpotter Disproportionately Targets Black and Latino New Yorkers?
- Why Did the NYPD Expand the ShotSpotter Program Despite Known Failures?
- What Are the Legal and Policy Paths to Stopping or Reforming ShotSpotter in NYC?
- What Are the Broader Risks of Using Technology Like ShotSpotter in Law Enforcement?
- What Evidence Exists About ShotSpotter’s Effectiveness in Other Cities?
- What’s Next for ShotSpotter in New York City and What Should Residents Know?
- Frequently Asked Questions
How Did the NYPD Waste $54 Million on a Gunshot Detection System That Doesn’t Work?
The NYPD’s nine-year commitment to ShotSpotter represents one of the department’s most expensive and least effective technology investments. According to the Brooklyn Defenders’ analysis of previously undisclosed police data, the system correctly identified actual gunfire in only 16.57% of the alerts it generated—meaning the NYPD acted on roughly 8,000 false alerts over nine years. The New York City Comptroller’s June 2024 audit corroborated these findings, determining that 80-92% of ShotSpotter alerts did not result in confirmed shootings and that officers were dispatched to non-shooting locations in 87% of cases where the system triggered a response. The financial commitment ballooned despite mounting evidence of failure.
After nearly a decade of poor performance, the NYPD and SoundThinking (the company behind ShotSpotter) announced a $21.8 million three-year contract extension in February 2025. This renewal occurred even as the Comptroller was preparing his audit findings and as civil rights organizations were documenting the system’s discriminatory impact. For context, $54 million over nine years averages $6 million annually—a sum that could fund substantial community violence intervention programs, youth employment initiatives, or mental health services, all of which have demonstrated effectiveness at reducing gun violence. The comparison illustrates the opportunity cost: resources devoted to a technology that generates predominantly false alerts rather than evidence-based prevention strategies.
What Evidence Shows ShotSpotter Disproportionately Targets Black and Latino New Yorkers?
The Brooklyn Defenders’ comprehensive analysis reveals a stark pattern: two-thirds of residents living within shotspotter coverage zones are Black or Latino, despite these neighborhoods not having disproportionately higher actual shooting incident rates compared to their over-surveillance. Sensor placement decisions—made by police without transparent criteria or community input—overwhelmingly concentrated the technology in Black and Latino neighborhoods, creating a surveillance infrastructure that monitors some communities far more intensively than others. This geographic targeting mirrors historical patterns of unequal law enforcement practices in New York City. The disparity becomes even more troubling when examining how residents are affected by false alerts.
Neighborhoods with predominantly Black residents experience 3.5 times higher rates of police deployment based on unconfirmed ShotSpotter alerts compared to predominantly white neighborhoods. This means residents in over-surveilled areas face not just more surveillance but more police interactions rooted in false information—creating genuine public safety risks. When officers are dispatched based on incorrect data, the potential for escalation, misidentification, and harm increases. A resident in a heavily-monitored neighborhood may suddenly find armed police at their location based on a system alert, while residents in lightly-monitored areas face significantly fewer such encounters. This creates a form of surveillance inequality where some New Yorkers experience police presence as a frequent presence, often based on technological error rather than actual criminal activity.
Why Did the NYPD Expand the ShotSpotter Program Despite Known Failures?
The February 2025 contract extension appeared to defy logic—the NYPD chose to commit an additional $21.8 million to a program it had been running for nine years with documented poor results. Several factors likely influenced this decision. First, ShotSpotter’s corporate parent, SoundThinking, has invested heavily in maintaining the NYPD contract, which represents one of the most visible and lucrative deployments of its technology nationally. The company has strong incentives to defend its largest customer relationship, and the NYPD has shown institutional inertia around technology investments. Second, the department may have believed that scaling up the system—expanding sensor coverage or improving software—could improve performance, even though nine years of data suggested otherwise.
However, the Comptroller’s decision to decline registration of the contract renewal in early 2025 created a significant obstacle. The Comptroller’s office found that the contract extension violated procurement rules and lacked adequate justification given the documented performance failures and racial equity concerns. This action by elected officials created legal and political pressure that the NYPD could not simply ignore. Additionally, civil rights organizations, community groups, and researchers escalated their opposition throughout 2024 and 2025, characterizing ShotSpotter as a tool of discriminatory surveillance rather than public safety infrastructure. The result: a program that appeared to enjoy institutional support within the NYPD faced mounting external resistance from city officials, advocates, and the public.
What Are the Legal and Policy Paths to Stopping or Reforming ShotSpotter in NYC?
The class action litigation represents one avenue through which affected residents may seek compensation or injunctive relief. Class actions allow groups of residents who claim they were subjected to discriminatory surveillance or wrongful police encounters based on false ShotSpotter alerts to pursue damages collectively rather than individually. The legal theories in such cases typically rest on civil rights statutes (Section 1983 and state law equivalents), alleging that ShotSpotter deployment violated constitutional protections against unreasonable searches and seizures, or that it facilitated racial discrimination in law enforcement. However, class actions face procedural hurdles and the outcome remains uncertain.
In February 2026, the NYPD released an updated Impact and Use Policy for ShotSpotter that presumably reflects both the Comptroller’s concerns and the broader pressure from advocates. The specifics of this policy—whether it truly constrains officer response procedures, requires additional verification before dispatch, or mandates documentation of alert outcomes—will determine whether the policy meaningfully reduces harm or largely preserves the status quo with cosmetic changes. The comparison matters: a policy that requires officers to independently verify shooting reports before responding to ShotSpotter alerts would substantially change operational practice, while a policy that merely encourages additional caution offers minimal protection. Legislative action also remains possible—City Council members could pass laws restricting or prohibiting ShotSpotter deployment, as some other cities have done. The legal path forward likely involves multiple strategies: litigation for affected residents, administrative challenges to contract renewals, policy reforms, and potential legislative prohibition.
What Are the Broader Risks of Using Technology Like ShotSpotter in Law Enforcement?
ShotSpotter illustrates a category of law enforcement technology known as “prediction” or “detection” systems—tools that claim to identify crime or crime risk through algorithmic processing. These systems share common vulnerabilities: they often perform worse in their actual operational setting than in controlled tests, they are frequently biased against historically over-policed communities, and they create feedback loops where increased surveillance of certain areas generates more police data from those areas, which then appears to justify further targeting. The fundamental problem is that ShotSpotter conflates surveillance density with crime density—the fact that two-thirds of residents in ShotSpotter zones are Black or Latino does not mean those neighborhoods have proportionally more actual shootings; it means they have proportionally more sensors and police attention. A critical limitation of surveillance technology is that it does not reduce underlying causes of gun violence.
Research on effective violence reduction emphasizes community violence intervention programs, youth employment, mental health services, and conflict mediation—approaches that address root causes rather than attempting to detect incidents after they occur. When cities invest heavily in surveillance technologies instead, they redirect resources away from proven prevention strategies. Also, increased police presence based on false alerts can itself damage community-police relationships and trust, potentially undermining whatever violence-reduction work police officers do manage to accomplish. The warning here applies broadly: expensive technology solutions to social problems often fail to solve those problems and can create new harms in the process.
What Evidence Exists About ShotSpotter’s Effectiveness in Other Cities?
The NYPD’s experience is not unique. Other cities that adopted ShotSpotter have reported similar problems. In many jurisdictions, independent audits have revealed false alert rates comparable to what NYC experienced, and some cities have discontinued the technology entirely. The variation in reported results depends partly on how different police departments define and measure “confirmation”—some count any officer response as a success even if no shooting is found, while more rigorous evaluations require independent corroboration of gunfire. This measurement problem matters significantly: a system might appear to work better simply because the evaluating jurisdiction uses a looser standard.
Research on ShotSpotter’s impact on actual gun violence rates has been limited and contested. No rigorous, peer-reviewed studies have demonstrated that ShotSpotter deployment reduces gun violence rates in ways that justify its cost. The technology’s defenders argue that even if false alert rates are high, occasional correct alerts can still provide value—a single prevented shooting might outweigh the cost and inconvenience of many false alerts. However, this argument ignores the collateral harms of intensive surveillance and police presence in specific neighborhoods, harms that are not distributed equally across the city. The burden of false alerts, and the resulting police encounters, falls disproportionately on Black and Latino residents, while any hypothetical benefits from preventing occasional incidents are distributed across the entire city.
What’s Next for ShotSpotter in New York City and What Should Residents Know?
As of early 2026, the future of ShotSpotter in NYC remains uncertain. The Comptroller’s refusal to register the contract extension created a legal impasse—the NYPD cannot formally execute a contract the city’s fiscal officer will not register. Class action litigation against the program is ongoing, with residents claiming damages for discriminatory surveillance and wrongful police encounters. The NYPD’s February 2026 Impact and Use Policy may represent an attempt to save the program by imposing restrictions on its use, or it may be a preliminary step toward discontinuation.
What seems clear is that ShotSpotter’s expansion in NYC has stalled, and the question is whether the program will be reformed, restricted, or abandoned entirely. For residents in ShotSpotter coverage areas, the path forward involves staying informed about developments in ongoing litigation, monitoring how police actually implement the new Impact and Use Policy, and engaging with advocacy organizations and elected officials pushing for accountability. The broader lesson extends beyond ShotSpotter: expensive surveillance technologies imported into policing should face rigorous scrutiny regarding actual effectiveness, racial impact, and opportunity costs. The $54 million spent on ShotSpotter over nine years is money that was not spent on proven violence-reduction strategies—a choice with documented consequences for public safety and community wellbeing. As cities continue to evaluate new law enforcement technologies, the NYPD’s ShotSpotter experience provides a cautionary example of how well-intentioned technology can become a tool for discriminatory surveillance when deployed without sufficient oversight, transparency, and accountability.
Frequently Asked Questions
What is ShotSpotter and how does it work?
ShotSpotter is a gunshot detection system developed by SoundThinking that uses sensors to identify sounds of gunfire and alert police to potential shooting locations. The NYPD deployed it starting around 2016 as a tool to respond quickly to gun violence.
How accurate is ShotSpotter?
According to the Brooklyn Defenders’ analysis of nine years of NYPD data, ShotSpotter correctly identified actual gunfire only 16.57% of the time. The NYC Comptroller’s audit confirmed that 80-92% of ShotSpotter alerts did not result in confirmed shootings.
Why did the NYPD renew its ShotSpotter contract if the system doesn’t work?
The NYPD announced a $21.8 million three-year extension in February 2025 despite the documented poor performance. However, the NYC Comptroller declined to register the contract renewal in early 2025, citing procurement violations and inadequate justification given the performance data.
Is there evidence that ShotSpotter is deployed differently in Black and Latino neighborhoods?
Yes. The Brooklyn Defenders found that two-thirds of residents in ShotSpotter coverage zones are Black or Latino, and that neighborhoods with predominantly Black residents experience 3.5 times higher rates of police deployment based on unconfirmed alerts compared to predominantly white neighborhoods.
What legal options do people affected by ShotSpotter have?
Class action litigation is ongoing, allowing groups of residents to pursue claims related to discriminatory surveillance, wrongful police encounters, and civil rights violations. Additional accountability mechanisms include administrative challenges to contract renewals and potential legislative prohibition.
What policy changes has the NYPD made regarding ShotSpotter?
In February 2026, the NYPD released an updated Impact and Use Policy for ShotSpotter. The specific operational changes in this policy and how strictly it restricts officer response procedures remain subjects of monitoring by advocates and civil rights organizations.