# Swedish researchers demo AI that spots hidden guns via Wi‑Fi signals

> FOI’s WiFireNet can tell a concealed handgun from ambient Wi‑Fi data, offering a camera‑free detection method.

Oossa · 2026-10-18 · https://oossa.com/en/swedish-researchers-demo-ai-that-spots-hidden-guns-via-wi-fi-signals

The Swedish Defence Research Agency (FOI) unveiled WiFireNet, an AI that detects hidden handguns by analyzing how they disturb Wi‑Fi signals. The system uses a standard Wi‑Fi transmitter and receiver to collect channel state information – the way signals bounce and change after hitting an object. The AI then interprets those distortions to spot a gun. The approach works with older 802.11a Wi‑Fi hardware, meaning it could be added to existing networks without new equipment.

## The facts

- Paper posted on arXivWi‑Fi on October 13, 2026
- System uses off‑the‑shelf 802.11a Wi‑Fi devices

## Why it matters

Security staff could locate concealed weapons in venues where cameras or metal detectors are impractical.

## Sources & references

1. [Researchers train AI to detect concealed handguns using Wi-Fi signals](https://www.tomshardware.com/tech-industry/artificial-intelligence/researchers-train-ai-to-detect-concealed-handguns-using-wi-fi-signals-open-source-wifirenet-achieves-precision-detection-on-older-802-11a-standard-by-analyzing-how-weapons-distort-wireless-signals) – Tom's Hardware, 2026-10-18

Last updated: 2026-10-18