What Data the App Uses
NearLens scans for nearby Bluetooth Low Energy (BLE) devices and processes the following information locally on your device:
- Device names broadcast via Bluetooth
- Manufacturer IDs from BLE advertisement packets
- Signal strength (RSSI) to estimate proximity
- Detection timestamps for the activity log
This data is used solely to identify known smart glasses models (such as Ray-Ban Meta and Snap Spectacles) and alert you to their presence.
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 from within the app
No Data Collection
NearLens does not collect:
- Personal information (name, email, phone number)
- Your geographic location (the app never reads, stores, or transmits GPS coordinates)
- Device identifiers or advertising IDs
- Usage analytics or crash reports
- Any data from other apps on your device
App: No Third-Party Services
The NearLens app does not integrate with any third-party analytics, advertising, or tracking services. There are no SDKs inside the app that collect or transmit your data.
Website Analytics (nearlens.app)
This website uses Google Analytics 4 to understand how visitors use it. This only activates when you click Allow all cookies in the consent banner, or enable the Analytics category in cookie settings.
- What is collected: pages visited, buttons clicked (e.g. download, play video), scroll depth, session duration, and browser/device type. No personally identifiable information is collected.
- Purpose: understanding how the site is used so we can improve it.
- Processor: Google Ireland Ltd., Gordon House, Barrow Street, Dublin 4, Ireland. Data may be transferred to Google LLC servers in the United States under Standard Contractual Clauses.
- Legal basis: your consent (LGPD art. 7, VI; GDPR art. 6(1)(a)). You can withdraw consent at any time by clicking the shield icon in the bottom-left corner of any page.
- Retention: Google Analytics data is retained for 14 months. The consent cookie (nearlens_consent) is stored locally for 365 days.
- Cookies set: _ga and _ga_B86DW1NTMD, both with a 2-year expiry. Full details are in the Declaration tab of the cookie settings dialog.
- Opt-out: deny or withdraw consent via cookie settings, or install the Google Analytics opt-out browser add-on.
Your Rights
Under LGPD (Lei n. 13.709/2018) and GDPR you have the right to:
- Access the personal data we hold about you.
- Correct inaccurate or incomplete data.
- Delete data collected with your consent (withdraw consent and request deletion).
- Portability of data in a structured format where technically feasible.
- Information about data sharing and processors.
- Withdraw consent at any time without affecting the lawfulness of prior processing.
To exercise these rights, contact us at hello@marcosrezende.com. For data held by Google Analytics, you can also use Google's opt-out add-on or your Google account settings.
Permissions
NearLens requests the following device permissions:
- Bluetooth: Required to scan for nearby BLE devices. This is the core functionality of the app.
- Location (iOS requirement): iOS requires location permission to perform Bluetooth Low Energy scanning. NearLens never reads, records, or transmits your geographic location. This permission is used solely to satisfy the operating system's requirement for BLE scanning.
- Notifications (optional): Used to alert you when smart glasses are detected nearby. You can enable or disable this in Settings.
These permissions are used exclusively for the app's stated purpose and never for tracking or data collection.
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.
Acknowledgements
With thanks to the people and projects that helped shape NearLens:
- Marcos Rezende: Product design, UX and visual identity (marcosrezende.com)
- Emanuel Cardoso, Mariana Fernandes & Marcos Rezende: User discovery research and field testing
Open Source Software
NearLens is built on open-source software. Under the GNU Affero General Public License v3.0 (AGPL-3.0), you have the right to access, study, modify, and redistribute the source code. The app and website do not use open-source components to collect, process, or share your personal data.
A full list of third-party open-source libraries, their authors, and their licence texts is available on the Licences page.
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. We encourage you to review this page periodically.
Contact
If you have questions about this Privacy Policy, please contact us at hello@marcosrezende.com.