I want shoppers on my Youcan-powered store to tap a “Try On” button, grant camera access on their phone, and instantly see any of my sunglasses accurately placed on their face. The feature must detect the user’s head in real time, stay locked in place as they move, and deliver the same smooth experience on both iPhone (Safari) and Android (Chrome). All 3D models of the frames are already prepared, and several distinct styles share the same requirement for flawless tracking and realistic scale. I simply need the WebAR layer built, integrated, and thoroughly tested so customers can switch between styles without refreshing the page or re-aligning their face. Deliverables: • Web-based AR module integrated into my Youcan product pages • “Try On” button that launches the camera or falls back gracefully on unsupported browsers • Real-time face detection and landmark tracking (e.g., MediaPipe FaceMesh, AR.js, Three.js—use the stack you are most comfortable with) • Dynamic loading of my existing 3D models and material files • Accurate fit and occlusion handling for multiple frame styles • Cross-device QA with documented test videos and code hand-off Acceptance criteria will be met once the module is live on a staging URL, all styles load correctly, and tracking remains stable through head turns and tilts on current iOS and Android releases.