Tell

About this project

Last finals week I fell asleep three times with my laptop still playing lecture videos. I'd wake up at 3am, lights on, headphones in, having missed everything. I wasn't choosing to ignore the warning signs. I just didn't notice them until I was already out. Your body starts giving clues long before that happens. You slouch. Your blinks get slower. Your eyes drift toward your phone every few minutes. Tell watches for those signals and says something out loud when it sees them. Using a webcam, Tell tracks posture, fatigue, and attention in real time. When a signal stays past a personalized threshold, the coach speaks up. "You're folding like a lawn chair, sit up." Once you correct it, Tell acknowledges it and moves on. It keeps running even when you're in another tab watching a lecture, taking notes, or working on an assignment. Every session is saved to a weekly dashboard. You can see when your focus dropped, which days were the hardest, and how often you responded to nudges. Gemini reviews the week's data and writes a short summary of the patterns it finds. Tell uses MediaPipe for on-device pose and face tracking, Gemini 2.5 Pro and Flash for observations and weekly insights, and ElevenLabs for voice feedback. Most processing happens directly in the browser. A single frame is sent to Gemini every few seconds, and a green flash shows exactly when that happens. No video is stored. Tell doesn't try to guess how you feel. It watches real, observable behavior and points out what you might have missed.

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