Detection tool for covertly recording smart glasses

What to build

A mobile app (iOS/Android) or small Bluetooth-scanning device that detects AI smart glasses (Meta Ray-Ban and similar) in range and alerts the user or venue staff, aimed at privacy-conscious individuals, gyms, offices, and event venues enforcing no-recording policies.

Meta's admission that its smart glasses can record without a working activation indicator exposes a trust gap that a lightweight Bluetooth detection tool could fill for privacy-conscious users and venues.

Demand

Privacy-conscious consumers and venues (gyms, offices, bars, event spaces) want a way to detect recording-capable smart glasses nearby now that Meta has confirmed the indicator can't be trusted; HN engagement on the story shows the issue is resonating broadly.

• Hacker NewsNews

  Meta confirms smart glasses were recording without being activated — 63 points, 10 comments on HN, indicating high engagement at the source.

• MetaNews

  Meta officially confirmed the recording-indicator gap, which validates the underlying concern driving demand for third-party detection tools.

Stack

• Bluetooth LE scanning (CoreBluetooth / Android BLE APIs)
• React Native or Flutter
• Device fingerprint/signature database (manually curated)
• Firebase or Supabase for backend/alerts
• Push notification service (APNs/FCM)

Solo + AI difficulty

The BLE scanning and alerting logic is straightforward for a solo builder with AI help; the hard part is building and maintaining a reliable device-signature database for smart glasses since Bluetooth signals are inconsistent and spoofable, which limits detection accuracy. A rough MVP (scan + alert for known Meta Ray-Ban signatures) could ship in 2-4 weeks, but real-world reliability will take much longer to validate.

Entry threshold

Low barrier: a mobile app using standard BLE scanning APIs and publicly known device fingerprints can ship an MVP in days to a couple of weeks, no hardware, licences, or large capital required.

Window

6-12 months

Where to find first users

• r/privacy and r/smarthome
• Product Hunt launch
• Direct outreach to gym and coworking space owners
• Indie hacker communities (Indie Hackers, Twitter/X build-in-public)

Counter-signals & risks

• Bluetooth device signatures for smart glasses may be spoofable, inconsistent, or not reliably distinguishable from other Bluetooth accessories, undermining detection accuracy.

• Meta or other manufacturers may quickly patch the recording-indicator issue via firmware update, reducing the urgency and addressable market for a third-party detection tool.

• Venues and consumers may prefer policy-based or signage-based solutions over a paid app/SaaS, and legal/regulatory ambiguity around scanning other people's personal devices could limit adoption.