ZuckOff App Sniffs Out Nearby Meta Smart Glasses via Bluetooth

A free iOS and Android app called ZuckOff, built by Polish developer Pawel Szydlowski, alerts users when camera-equipped smart glasses are in the vicinity. It works by matching Bluetooth signals against fingerprints Szydlowski compiled by buying and recording the broadcasts of models like Ray-Ban Meta, Oakley Meta, and Snap Spectacles. The app can’t tell you whether a device is actively recording or who is wearing it—it only reads signal strength for rough proximity—but that turns an otherwise invisible surveillance risk into a partly visible one. It drew more than 5,000 App Store downloads and roughly 1,000 on Google Play in its first month, with a paid Pro tier adding background monitoring, alerts, sighting history, and CSV export.

The tool lands amid intensifying scrutiny of Meta’s glasses, which sold around seven million pairs in 2025. Wearers have defeated the recording-indicator LED with a strip of tape, enabling covert filming, and a January BBC investigation found accounts posting footage shot on the glasses—including one clip exposing a woman’s face and phone number that racked up 1.3 million views. Meta says a July update will detect a tampered or destroyed LED and disable the camera, and CTO Andrew Bosworth insists the device was designed to be noticed, a claim that sits awkwardly against the product’s pitch that the camera doesn’t look like one.

ZuckOff is hard for Meta to challenge legally: it intercepts nothing and reads only signals that are lawful to observe, while the underlying fingerprinting approach is cheap and trivial to replicate. For now it functions as a stopgap consumer defense against unconsented filming, filling a gap that regulators worldwide have yet to close.