The reason this is worth a click: someone turned 'stop filming me' from a complaint into a phone tool. Pawel Szydlowski bought Ray-Ban Meta, Oakley Meta, and Snap Spectacles himself, captured their Bluetooth broadcast signatures, and built a fingerprint-matching scanner. The free tier does manual scans; Pro adds background monitoring and alerts.
I'd discount it on two fronts. One, it only tells you glasses are nearby—not whether they're recording or who's wearing them. Two, Meta pushed an update in July that blocks recording when the LED is physically tampered with, though tape over the light still works. The BBC investigation from January is the hard evidence: accounts posted non-consensual footage, including a woman's face and phone number, with one video hitting 1.3 million views. Meta sold roughly seven million pairs in 2025, so the base is large.
Think of this app as a presence alert, not an anti-recording solution. But the fact that a solo dev self-funded it and released it for free says a lot about how low public trust in this hardware has dropped.