★ 第 22 单元
Design for faces, wrists and whole rooms. Learn how smart glasses and VR headsets change UX: audio first, glanceable displays, comfort, spatial layout and privacy for people nearby. Then build with the APIs: a companion app that sends a camera frame to a vision model, and a WebXR session in the browser. Crumb Club's Sam gets a hands-free baking assistant, and the bakery opens a VR bread-shaping class.