Questions
The ones people ask before they press the button.
Questions
Where does this come from?
Johnny Chung Lee's 2007 head-tracking demo with a Wii remote: move your head and a flat screen becomes a window. This is the same idea with the webcam as the sensor and MediaPipe FaceMesh as the tracker, in a browser tab.
Is my camera uploaded?
No. The video is read by MediaPipe inside your browser and the only thing that comes out is three numbers: where your eyes are and how far apart. Nothing is sent to us and there is no server that could receive it. The site's own guard greps the code for an upload path on every build.
What happens if I say no?
The scene keeps playing with a slow synthetic pose, and the button changes to say the camera is blocked. You are not asked again in this session unless you press Try again yourself. Changing the permission in your browser's site settings lifts it.
Why does it need my face and not glasses?
The illusion needs to know where your eyes are, not what they look at. A face gives that from a plain webcam; VR glasses and 3D glasses solve a different problem. This is not eye tracking and not face recognition: it never identifies anyone.
Does it work on a phone?
Yes, with the front camera, though a phone is small enough that the effect is subtle. It works best on a laptop or a monitor with the camera above the screen.
Can I use it in my own page?
Yes. Every kit has a snippet and an embed address, and the SDK page describes the pose contract. The download is a single HTML file you can read and change.