Know when camera glasses may be nearby.
LensSentry listens for the Bluetooth signals smart glasses give off — Ray-Ban Meta, Oakley Meta, Snap Spectacles, Amazon Echo Frames — and gives you a quiet heads-up.
That word may is doing real work, and we won't take it out. Read why below.
Quiet isn't a guarantee — glasses mostly announce themselves when powering on or pairing.
How the detection works
Three signals, and the honesty to say what they don't prove.
Camera glasses keep a Bluetooth link to their paired phone and announce themselves over Bluetooth Low Energy — most reliably when powering on, pairing, or leaving their case.
LensSentry matches those signals against a curated signature list — manufacturer identifiers verified against the Bluetooth SIG registry and real-world captures — updated over the air, so new fingerprints reach you without an app update.
You get a calm status, never an accusation: All clear → Possible → Likely nearby, with a proximity estimate. On Android, monitoring runs in the background and survives reboots.
Two things most detectors won't tell you
Most hedge their alerts but let a quiet screen imply safety. We say both halves out loud — in the app, on the radar screen, not buried in a support article.
A clear screen isn't a guarantee. Glasses already connected to a phone can go silent.
A detection isn't proof anyone is recording. It means a matching signal is nearby.
Specification
Built like an instrument, not a novelty.
Private by architecture
A tool that watches for surveillance shouldn't perform any. These aren't policy promises we could quietly revise — they're how the thing is built.
Be first through the door
The Android closed test opens shortly, and testers get in first. One email. No follow-up marketing, ever.