# Second Opinion

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Brenda Luo](https://cerebralvalley.ai/u/rendyest), [Ayesha Khalil](https://cerebralvalley.ai/u/ayeshakhalil), [Arif Ahmad Kamil](https://cerebralvalley.ai/u/aak12)
- **GitHub:** https://github.com/Rendyest/Second-Opinion
- **Demo video:** https://drive.google.com/drive/folders/1Zkp9oECu2qCh_XDhRcII5-2ILtf17hdA?usp=sharing
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3958

Second Opinion is a privacy-preserving, webcam-guided coaching demo for upper-limb rehabilitation, built around a real daily-living task: reaching to the face and holding it there, as in washing your face. In /setup, the person gives separate consents, passes camera checks and calibrates their arms and face. In /session, a Meta Detectron2 pose model running in a local sidecar tracks 17 body keypoints, and OpenCV keeps frames on the device. A fast rule-based System 1 turns the keypoints into joint angles and flags struggle signs such as a failed reach, a hand that can’t stay at face level, a dropped hand and shoulder hiking. Coaching is triggered only when difficulty appears or the person asks for it. Separate /metrics, /review and /validation pages let a therapist or reviewer inspect struggle events, coaching calls and evaluation results. No video leaves the device, and only a small angle summary can go to the cloud, with consent. This is a research demo, not a clinical tool.

## More from Meta Global AI Developer Hackathon

- [Research Navigator](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3955)
- [Road to 5K](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3956)
- [Research Microscope](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3957)
- [Tonelab Muse](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3959)
- [CloveaXD](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3960)
- [Andaman Khunaprapakorn](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3961)

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Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3958. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt