Question Face tracking without device tracking

Hi there,

Maybe a bit of an unusual question, but we would like to have face tracking without the position and orientation of the device.

Our setup involves a stationary iPad. We would like to have the user appear on screen, and add stuff to his facemask, but other objects in the scene should remain in place, regardless of the orientation of the iPad.

Out of the box things work for an iPad that is setup perfectly vertical, but as soon as it is positioned at an inclination, the other objects of course move away from their desired position.

We have tried disabling the ARPoseDriver and the AR Input Manager. This does almost what we want, except the facemask is rotated by 90 degrees over the Z axis. We could try hacking around this, but it just feels like there might be a more elegant way to achieve the desired effect, perhaps just a simple setting that we have overlooked.

What would be the best way to go about this?