Cityscape at Night

Ever wondered how reliable those AI gunshot-detection systems really are? If so, buckle up! We’re diving into some eye-opening insights about the accuracy and effectiveness of various systems deployed in cities like San Jose and New York. We’ll also explore why some communities have grown skeptical of this technology. 🤔


San Jose’s Gunshot Detection System: Expectations vs. Reality

San Jose recently rolled out a new gunshot detection system provided by Flock Safety. Here’s what we found out:

  • Initial Reports: In the first few months, the system alerted authorities to 123 incidents.
  • Actual Gunfire: Out of these, only 12% were confirmed as real gunfire.
  • False Alerts: A staggering 34% of alerts were false.
  • Unconfirmed Alerts: For 12% of cases, the truth remains a mystery.

New York City’s ShotSpotter: An Audit Revelation

New York City’s comptroller didn’t leave any stone unturned while auditing the ShotSpotter system. The results?

  • Verifiable Gunfire: Only 13% of alerts could be confirmed as gunfire over the examined period.

Company Accuracy Claims: A Tale of High Numbers

Both Flock Safety and ShotSpotter boast high accuracy rates for their systems:

  • Flock Safety’s Raven System: Claims a 90% accuracy rate.
  • ShotSpotter: Claims a whopping 97% accuracy rate over a two-year period.

But how do these claims hold up against real-world data?

Studies on Gunshot Detection Systems: What Do the Experts Say?

Study 1: Quicker Responses but No Reduction in Crime

A study by Eric Piza showed mixed results for gunshot sensors:

  • Quick Response: Police responded faster to incidents.
  • No Crime Reduction: Gun-related crime rates didn’t go down.

Study 2: Unfounded Alerts More Common with Sensors

Piza’s second study discovered:

  • Unfounded Classifications: Gunshots in areas with sensors were 15% more likely to be classified as unfounded compared to areas without sensors.

Community Concerns: The Real Impact

Gunshot detection systems might not be as helpful as they seem, especially in communities of color. Here’s why:

  • Disproportionate Impact: These systems disproportionately affect communities of color.
  • False Alerts: Lead to unnecessary and potentially dangerous police interactions.

Other Cities’ Experiences: Lessons Learned

Champaign, Illinois, and New York City offer valuable lessons in tech deployment:

  • Champaign, Illinois: Canceled its contract with Flock Safety and SoundThinking due to poor performance.
  • New York City: Comptroller recommended not renewing SoundThinking’s contract without thorough performance evaluation.

Final Thoughts

The mystery of AI gunshot-detection accuracy is finally unravelling, and the findings are as intriguing as they are concerning. While the technology promises high accuracy rates, real-world data and community experiences tell a different story. Whether you’re a tech enthusiast or worried community member, it’s crucial to stay informed and critically evaluate these systems.

Do you think gunshot-detection systems are worth the investment, or do their flaws outweigh their benefits? Let us know your thoughts in the comments!


Keywords: AI gunshot detection, gunshot detection accuracy, San Jose Flock Safety, New York ShotSpotter, Eric Piza study, community impact gunshot detection


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