The most common questions, answered

NearLens scans for Bluetooth signals from smart glasses and tells you when one is nearby. You get a discreet alert with an estimated distance and the level of confidence behind the match.

The purpose is awareness. Knowing a camera may be in the room lets you decide how to act, which is a choice you do not currently have.

NearLens detects devices whose Bluetooth identifiers or verified signal signatures are already in its recognition data. It is not a universal detector.

Some low-cost or generic frames do not broadcast a detectable Bluetooth signal, while others use identifiers or payloads that are not publicly documented. Those devices may be nearby without producing a result.

No. NearLens detects that a device is present. Recording state is not broadcast over Bluetooth, so no app can read it from outside the glasses.

Presence is still useful information. A camera that might be recording is a different situation from no camera at all.

No, and it never will. NearLens reads a device signal, not a person. There is no identity, no photo, no name, and no way to link a detection to an individual.

There is also no map, no shared feed, and no way to send a detection to another user. Those features were left out on purpose, because a tool built to protect people should not make it easier to target them.

When someone lifts a phone to record you, you see it and you can respond. Smart glasses are designed to disappear on a face. The person being recorded gets no signal, no consent request, and no way to opt out.

That gap is the reason NearLens exists. It does not close the gap. It makes the gap visible to the person standing on the wrong side of it.

The original problem was not recording. It was the absence of any signal that recording was even possible. When someone raises a phone toward you, you see it. You can look away, leave, ask them to stop, decide you are fine with it. Smart glasses remove that signal entirely. The wearer knows. The person being recorded does not. That asymmetry is what NearLens is built against.

Knowing changes the decision point. Before NearLens, the choice to leave, stay, ask, or document was impossible because the information did not exist. The app returns one signal: not proof of recording, not the wearer's identity, just presence. That is enough to make a decision rather than have no decision at all.

The honest position is that NearLens is useful and insufficient. The structural fix is consent design at the platform level, not a detection app. NearLens treats a symptom, and it does not pretend otherwise.

Yes, by design. A phone camera requires the user to raise a device to their face, which is a visible act. Smart glasses have no equivalent signal: the camera sits inside the frame, there is no viewfinder, no shutter sound unless the manufacturer adds one, and no indicator that bystanders can read from a normal distance.

Ray-Ban Meta, for example, has a small white LED that lights while recording, but it is easy to miss in ambient light, and at least one documented modification removed it entirely. NearLens exists because the visual cue that phone cameras provide does not reliably transfer to wearables.

Ray-Ban Meta glasses are currently the most discussed, following 2024 reporting by 404 Media and The New York Times documenting their use alongside facial-recognition tools in public. Snap Spectacles have attracted similar concern since the original version launched in 2016. EssilorLuxottica smart eyewear and Oakley Meta are manufactured through the same Meta partnership and share the same Bluetooth identifier space.

Newer products including Meta Orion and a growing range of camera-capable frames from smaller brands expand the category further each year. NearLens can only recognise devices whose observable identifiers or verified signal signatures are in its recognition data.

The NearLens app does not use analytics, telemetry, advertising, or account data. Bluetooth observations and detection history stay on the device.

The website is separate and uses optional Umami Cloud analytics only after consent. It also uses one necessary cookie to remember that choice.

NearLens requests Bluetooth access to scan for nearby BLE signals. iOS does not require location authorisation for Core Bluetooth scanning.

NearLens does not need GPS coordinates for detection.

Detection history is opt-in and stored locally. The exact automatic-clearing interval in the current release has not been verified, so NearLens does not promise a fixed retention period here.

You can clear the full log at any time from within the app, and deleting the app deletes its local history.

Only if you turn it on. Save Detection History is off by default and lives entirely on your device.

You can clear it at any time, and deleting the app deletes the history with it. Nothing is backed up to a server, because there is no server.

The NearLens app processes Bluetooth observations, detection history, and Privacy Intelligence on the device. It does not send that information to this website.

The website uses the internet to serve pages, optional consent-controlled analytics, and optional press translation.

No. NearLens only listens for the advertising packet that every Bluetooth device broadcasts openly to announce itself. No pairing is attempted, nothing is intercepted, and nothing is decrypted.

The wearer is not contacted, notified, or affected in any way.

NearLens listens for Bluetooth Low Energy advertising packets that a device makes visible nearby.

It compares observable identifiers and verified signal fields against recognition data for known smart-glasses hardware. It cannot identify a device that is not advertising a detectable signal or whose identifier or signature is not in that data.

Bluetooth Low Energy devices broadcast short-range advertising signals. NearLens listens for compatible signals associated with supported smart-glasses hardware.

That provides presence awareness, not person tracking, a map, or proof that a device is recording. A missing result only means that no compatible signal was observed.

Bluetooth devices can rotate the address they use in advertising packets. The same pair of glasses can therefore appear as several advertising identities over time, while two entries cannot safely be assumed to be two separate devices.

NearLens reports recognised signals for awareness, not a count of distinct glasses or people.

No. NearLens can recognise a compatible device signal, but it cannot read the device's firmware version, current connection state, recording state, or listening state from outside the glasses.

A model match describes the hardware, not everything that unit is doing now.

No. NearLens does not see where another device sends captured images or audio.

A Bluetooth advertising signal does not reveal the cloud provider, processing location, or retention policy chosen by the wearer. Those details require the manufacturer's documentation or independent testing, not a nearby-device scan.

A confirmed match means that the observed Bluetooth information matched a registered identifier or verified device signature. It does not mean that every pair of glasses in the room was found.

If a device broadcasts incompletely or uses an unpublished identifier, NearLens may not be able to make a reliable match.

NearLens needs two things: a detectable Bluetooth signal and an identifier or verified signal signature that the app recognises.

Some low-cost or generic frames do not transmit Bluetooth at all, and some devices use identifiers or payloads that are not publicly documented. No result means that no compatible signal was observed. It is not proof that no camera-equipped glasses are nearby.

No. A device that is not broadcasting cannot be detected by any Bluetooth scanner. NearLens sees no more than the glasses choose to announce.

The same applies to walls and direction. Signal strength gives a rough distance, not a location.

In field testing at a large arena, NearLens identified 15 likely smart glasses with no confirmed false positives. In a separate test at a theatre it observed 823 Bluetooth devices and flagged none, which was the correct result for that room.

Both numbers are worth reporting. A detection tool that never returns nothing is not measuring anything.

Bluetooth Low Energy range depends on the environment. In open space, NearLens can pick up advertising packets from 10 to 15 metres away. In a dense venue with many competing signals and physical obstacles, that drops to roughly 5 to 8 metres.

The app labels each detection with an estimated distance (within arm's reach, same room, or nearby), derived from signal strength, not precise measurement. Range is also affected by whether the glasses are facing toward your phone and whether the wearer has them paired to another device.

Sometimes, but only when the device broadcasts a detectable Bluetooth signal and its identifier or verified signal signature is in NearLens recognition data.

Many low-cost or generic frames do not transmit Bluetooth, and some use identifiers or payloads that are not publicly documented. In those cases, the device may not be detected even if it is nearby.

Privacy Intelligence is available in the current NearLens release. It summarises local detection patterns, including repeat encounters and cluster events, and can produce an exportable report. Its natural-language Q&A uses Apple Foundation Models on compatible iPhones.

Core Bluetooth detection does not depend on a generative model. Privacy Intelligence explains patterns calculated from local signals; it does not identify a person, prove that recording is active, or make a Bluetooth match more certain.

The Privacy Intelligence report summarises local detection history, including frequently observed brands, active time periods, repeat encounters, and cluster events.

The report can be exported. Pattern analysis and optional natural-language Q&A run on the device.

Yes. Privacy Intelligence is available in the current NearLens release. The base app can be installed on iOS 15.1.

Its natural-language Q&A requires iOS 26, Apple Intelligence enabled and available, and a compatible device: iPhone 15 Pro models or iPhone 16 or later. Feature availability can also depend on region.

Yes. Snooze for 15 minutes, for one hour, or for the rest of the session.

Alerts are haptic first and use pink rather than red, so a detection stays private to you and reads as information instead of an emergency. Constant agitation is not the goal.

An alert is not an instruction to run or confront anyone. It means NearLens observed a compatible Bluetooth signal nearby.

Pause and choose what makes sense: move to another seat or room, avoid a sensitive conversation, ask venue staff about their recording policy, or carry on. If someone is making you feel unsafe, prioritise your safety and seek help from staff or local emergency services.

NearLens cannot tell who is wearing the device, whether it is recording, or what they intend. Treat the alert as information for your decision, not proof that anyone did something wrong. Using NearLens to accuse a stranger would recreate the problem the app was built to address.

NearLens is free. There is no subscription, no advertising, and no data to sell because none is collected.

Android support is not listed. The current verified experience is on iPhone. The App Store listing also names iPad, iPod touch, and Apple Vision, but behaviour outside iPhone has not been independently verified.

NearLens focuses on recognising Bluetooth signals associated with camera-capable smart glasses. General-purpose Bluetooth scanners list every device in range without smart-glasses classification or confidence labels.

Other smart-glasses detector apps also exist. NearLens should be compared by its documented capabilities and limits, not by an exclusivity claim.

No. There is no paid tier and no features held back. Every user gets the same app.

Being free does not change what the app can and cannot detect.