In recent years, web technologies have made remarkable strides, unlocking the potential to develop captivating applications for AR, VR, and Web-3D. Join this session to learn about Web XR, Web Audio APIs & Three.js, TensorFlow.js as we apply them to create a playful web app that does face and hand gesture tracking in 3D space to create novel audio and visual effects. It will be made to run cross-platform on desktop, mobile, and AR/VR-compatible browsers and code will be available on GitHub.