Ray-Ban Display glasses embed a transparent display directly in the lens, projecting information into your line of sight without blocking what's in front of you. Think of it as a heads-up display you wear all day. Paired with the Meta Neural Band worn on the wrist, they respond to simple hand gestures — no touchscreen, no voice commands, no reaching for anything. It's a computer you wear, not one you carry.
Anyone who brushes their teeth (which should be everyone)
Most people rush it, skip sections, or lose count entirely. Brush Coach is for anyone who wants to actually brush well without staring at a timer on their phone in the bathroom mirror.
A brushing coach that knows what you are doing
Brush Coach uses the accelerometer built into the Ray-Ban Display glasses to detect and register your brushing motion in real time. No tapping, no input, no hands needed. It counts for you and tells you when to move to the next section of your mouth.
The app divides your mouth into sections and walks you through each one in sequence. The glasses read your brushing motion through the accelerometer, registering strokes as you go and prompting you to move on when each section is done. The full routine guides you through every part of your mouth without skipping, rushing, or guessing. Put on your glasses, pick up your toothbrush, and let it run.
An open-source starting point from our team
This is a Baseplate application — one of dozens of open-source foundations built by L+R as part of our alpha partnership with Meta on the Ray-Ban Display platform. Baseplates aren't always finished products. They're minimal, readable, and forkable. Built to show what's possible and give developers a working foundation to learn from and build on.
Brush Coach shows how smart glasses can turn a routine habit into a hands-free guided experience. The wider challenge is knowing when emerging hardware actually reduces friction instead of adding novelty. At L+R, competitive advantage comes from the deliberate intersection of strategy, design, engineering, and craft, with AI treated as a useful collaborator when it serves the problem. If your next prototype needs to become a practical application, reach out and we can help.
