Know when
you're watched.
Camera glasses are everywhere, and you usually can't tell when one is pointed at you. LensSentry listens for the Bluetooth signals they give off — Ray-Ban Meta, Oakley Meta, Snap Spectacles, Echo Frames — and gives you a quiet heads-up.
A screen recording of the app itself — the interface, the states and every word in it are the real thing. The signals are simulated, because a demo can't wait around for someone to walk past in camera glasses.
Now on the App StoreiPhone
The radar, in your pocket. Open the app — or ask Siri to check the room — and it listens for the Bluetooth signals camera glasses broadcast, tells you what it heard and how sure it is, and can hand you the session log afterwards. Scanning runs while the app is open, which is an iOS rule we'd rather state than hide.
Available for MacEarly build
A menu-bar radar for a machine that sits still — a front desk, a studio, a clinic reception. Unlike iPhone, macOS lets it listen for as long as it's running. Signed and notarized by Apple, so it opens with a normal double-click.
The detection engine is shared by every build and covered by 145 automated tests, and the iPhone app has been confirmed against real smart glasses in the field. The Mac build hasn't yet — it has been watched hearing 40 real Bluetooth devices. Treat either one as a second opinion, not a guarantee, which is what we'd say about any detector.
Mac build SHA-256 eece29e568ef4c0d20b771536a1707ab5d16842241378a38ee6062a45b9196f6
Three signals.
Zero exaggeration.
They announce themselves
Camera glasses keep a Bluetooth link to their paired phone and broadcast over Bluetooth Low Energy — most reliably when powering on, pairing, or leaving their case.
We match the fingerprint
LensSentry checks 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. How detection works, in detail.
You get a calm answer
Never an accusation: All clear, Possible, or Likely nearby, with a proximity estimate. On Android it keeps running in the background and survives reboots.
Two things most
detectors won't say.
Most hedge their alerts but let a quiet screen imply safety. We say both halves out loud — on the radar screen, not buried in a help 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.
Built like an
instrument.
Background radar
Keeps listening with the screen off and resumes after reboot, using hardware signal filters so 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 hold the room on alert. Muted devices stay visible but never raise the status.
Live signatures
Detection fingerprints update from the server. When manufacturers change their signals, you don't wait for an app-store release.
Camera verifyIn development
Point the camera to double-check what the radar heard, analyzed entirely on your device. Every alert gets a next step.
iPhoneOn the App Store
A foreground-first radar: open the app, check the room. We don't promise background monitoring iOS can't reliably deliver.
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.
No location
Bluetooth scanning is declared never-for-location at the operating-system level. We cannot 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 site counts page views without cookies.
Offline-first
Fully functional with no connection. Its only network use is downloading signature updates.
Opt-in contribution
You may share anonymous radio fingerprints of detected glasses to improve detection for everyone — off by default, no hardware addresses, no location, nothing about you.
On Android? Be first through the door.
The Android closed test opens shortly, and testers get in first. One email. No follow-up marketing, ever.