NearLens

Detect smart glasses powered by AI

Download on the App Store

© 2026 NearLens. Marcos Rezende · Privacy Policy

About NearLens

Important Notice

Harassing someone because you believe they are wearing a surveillance device may be a criminal offence. It could even be a more serious offence than the use of the device itself.

Do not harass anyone. Think before acting on any message from this application.

Why This App Exists

Privacy is a fundamental right. With the rise of smart glasses that can record without consent, we lose the freedom to exist in public spaces without being monitored.

NearLens gives you awareness. It is not about confrontation — it is about knowing.

How We Protect You

1Detects Bluetooth signals from smart glasses nearby
2Identifies manufacturers like Meta, EssilorLuxottica, and Snap
3Alerts you discreetly when a device is detected
4None of your data leaves your phone

Your Data, Your Rules

This app does not collect, transmit, or share any information. Detection logs are stored only on your device and can be deleted at any time.

Limitations

Other products from the same manufacturers (VR headsets, earbuds) may trigger alerts. The app does not guarantee a detected device is specifically smart glasses.

Credits

Product Designer / AI Builder

Marcos Rezende

marcosrezende.com

Original concept by

Yves Jeanrenaud

yves.jeanrenaud.net

Original Project on GitHub

This application is free and open source, licensed under the MIT License. It contains no ads, telemetry, or data collection.

Privacy Policy

Your Data Stays On Your Device

NearLens does not collect, transmit, or share any personal data. All detection data stays on your device and is never sent to any server.

What Data the App Uses

NearLens scans for nearby Bluetooth Low Energy (BLE) devices and processes the following information locally:

Device names broadcast via Bluetooth
Manufacturer IDs from BLE advertisement packets
Signal strength (RSSI) to estimate proximity
Detection timestamps for the activity log

Data Storage

Detection logs and app settings are stored locally on your device using on-device storage. This data is:

Never uploaded to any server
Never shared with third parties
Never used for analytics or advertising
Fully under your control — clear all logs anytime

No Data Collection

NearLens does not collect:

Personal information (name, email, phone)
Your geographic location
Device identifiers or advertising IDs
Usage analytics or crash reports
Any data from other apps on your device

Permissions

NearLens requests these device permissions:

Bluetooth — Required to scan for nearby BLE devices
Location (iOS/Android requirement) — Required by the OS for BLE scanning. NearLens never reads or transmits your geographic location.
Notifications (optional) — Alerts you when smart glasses are detected

No Third-Party Services

The app does not integrate with any third-party analytics, advertising, or tracking services. There are no SDKs that collect or transmit your data.

Children's Privacy

NearLens does not knowingly collect any information from children under the age of 13. The app does not collect personal information from any user.

Open Source

NearLens is open-source software licensed under the MIT License. The source code is publicly available for review.

Inspired by yj_nearbyglasses by Yves Jeanrenaud. NearLens is an independent reimplementation built from scratch in React Native.

Changes to This Policy

We may update this Privacy Policy from time to time. Any changes will be reflected on this page with an updated effective date.

Questions? Visit nearlens.app.

Effective date: March 18, 2026

© 2026 NearLens. Licensed under the MIT License.