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The original was posted on /r/selfhosted by /u/S0PHIAOPS on 2025-07-04 18:38:57+00:00.

Spent the last couple days testing a passive recon node I’ve been building with BLE, Wi-Fi, and SDR fused into one offline unit.

Drove around the city logging everything that’s quietly broadcasting: Flock cameras, BLE traffic poles, LPR systems, even light poles with Bluetooth beacons blinking blue……no joke, every corner had something.

The node doesn’t transmit at all. No sniffing, no spoofing……just pure passive intel.

Honestly… way more devices than I expected. Some of them you’d never notice unless you knew what you’re looking for. Most of the infrastructure is setup for “surveillance mesh”, all it needs is a little “code” push.

If anyone else has tried BLE + SDR + Wi-Fi fusion for field awareness, I’d love to trade notes or see what you’re running.