Hardware
The glasses display is deliberately sparse. While a hand is active you see a single recommended action, the count state and a confidence ring. Explanations wait until the hand is resolved.
The Device Bridge is a typed transport layer. A connected device and the in-app simulator are interchangeable, so every training mode is fully testable without hardware.
Full camera capture and on-device recognition require a native Android XR companion application. CountVision ships typed integration interfaces, an API specification, a WebSocket event catalogue and sample payloads for that companion. The browser alone cannot provide complete native smart-glasses functionality.