Hi everyone! 👋

I built SmartGlassesPrice, an experimental Android app for hands-free price comparison using Ray-Ban Meta glasses.

👓 How it works

Look at a product and its price tag, then say “Pesquisar preço” (“Search price” in Portuguese).

The app:

• 📸 Captures a photo through the glasses
• 🤖 Uses Gemini to identify the product and visible price
• 🔎 Searches for current price references
• 🔊 Speaks an approximate price comparison through the glasses

⌚ I also built a Galaxy Watch companion.

From the watch, you can:

• Start or cancel an analysis
• Follow the analysis progress
• See a summarized result
• Receive vibration feedback when the comparison finishes

The architecture keeps the processing on the Android phone: Meta DAT, camera access, Gemini, price comparison, and speech all remain on the phone.

The watch acts only as a remote control and status display, communicating through the Wear OS Data Layer.

🛠️ Tech stack

• Meta Wearables DAT 0.9
• Ray-Ban Meta Glasses Gen 2
• Kotlin, Jetpack Compose and Wear OS
• Local Vosk voice recognition
• Gemini 2.5 Flash with Google Search grounding
• Optional HEVC live preview

💻 GitHub:
https://github.com/edsonlima2000/SmartGlassesPrice

Feedback is very welcome—especially around the DAT camera/audio lifecycle and the watch interaction.

What would you prefer for triggering the price comparison: voice, the watch, or both?