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. Private by architecture. Honest about its limits.
Quiet isn't a guarantee — glasses mostly announce themselves when powering on or pairing.
Ray-Ban Meta glasses−58 dBmHow 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 — and updates that list 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 keeps running in the background and survives reboots.
The honest part
Most detectors hedge their alerts but let a quiet screen imply safety. We say both halves out loud, right on the radar screen:
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.
In the app
Built like an instrument, not a novelty.
Background radar
Keeps listening with the screen off and resumes after reboot, using hardware signal filters so your battery isn't the price of awareness.
Session log
What was seen while you were out: first seen, last seen, peak signal — still there after you stop scanning.
Mute familiar devices
Your own glasses shouldn't keep the room on alert. Mute them; they stay visible but never raise the alarm.
Signatures that stay current
Detection fingerprints update from the cloud. When manufacturers change their signals, you don't wait for an app-store release.
Camera verify — in development
The next layer: point your camera to double-check what the radar heard, analyzed entirely on your device. Every alert gets a next step.
iPhone — in development
A foreground-first verifier: open the app, check the room. We won't promise background monitoring iOS can't reliably deliver.
Privacy
Private by architecture, not by promise.
A tool that watches for surveillance shouldn't perform any. These aren't policy commitments we could quietly change — they're how the app is built.
No location
Bluetooth scanning is declared never-for-location at the operating-system level. We can't see where you are.
No accounts, ads, or tracking
Nothing to sign up for, nothing profiling you. The app sends no analytics at all; this website counts page views without cookies.
Offline-first
The app is fully functional with no connection. Its only network use is downloading signature updates.
Contribution is opt-in, always
You can choose to share anonymous radio fingerprints of detected glasses to improve detection for everyone — off by default, no hardware addresses, no location, nothing about you.
Be first through the door.
The Android closed test opens shortly, and testers get in first. One email, no follow-up marketing.