4 ms·

I'm pretty sure the identical effect can be (and has been) produced by the combination of normal front facing camera, accelerometer and gyroscope.

• gabrielgoh 9y ago
  I don't think so. This effect, at least as described, can change even as the phone remains static, e.g. if you head moves while the phone sits still on the table.
  • ponyous 9y ago
    Parent's comment mentions front facing camera. Probably for the same reason.
• baddox 9y ago
  The only required piece of information to render the scene is the position of the eye relative to the phone, which can be represented as an x and y coordinate relative to the rectangular frame captured by the front-facing camera. The accelerometer and gyroscope shouldn’t be needed, except perhaps to smooth out movement of the phone in the user’s hand if the camera’s frame rate is too low. My guess is that the only reason this demo is relying on the iPhone X is that Apple provides a facetracking API, so there’s no need to write any code or use external libraries to do eyetracking with a normal front facing camera.
  • rocqua 9y ago
    To really get a nice 3D effect you also need distance of the eyes from the phone. Based on the video in the article, this demo actually uses this depth information. You can't get this depth info easily from a camera. I can certainly see how the more advanced optics in the iPhone X really help here.
    • baddox 9y ago
      I suspect the size of the phone screen isn’t large enough for distance information to affect the rendered output significantly.