There are definitely follow-up enhancements that could be investigated, some of which are likely to get past iPhone's checks too.
Actually it might be possible to hack if your screen could output IR wavelengths.
[1] http://spie.org/newsroom/faces-light-up-over-vcsel-prospects...
>To detect whether there is something in front of the iPhone X, it is believed that the phone uses a "time-of-flight" (TOF) sensor, powered by an LED-based infrared illuminator... If the TOF sensor detects an object, it triggers the iPhone X's True Depth camera to take a picture. If that reveals a face, the phone activates its dot projector, shining a single infrared VCSEL through an optical system to create 30,000 spots while its infrared camera captures an image. It sends both regular and spottily illuminated IR face images to an application-processing unit (APU) that can recognize the owner and therefore unlock the phone.
It seems like you could render the 3D model of the head on a monitor and point the phone's camera at the monitor. If the phone needs to see some sort of parallax change relative to its own motion (from internal sensors), then one could put a 6-DOF tracker onto the phone and use it to update the rendered viewpoint of the head (a form of user perspective rendering).
Such an approach would be quite useful for law enforcement to gain access with much less time waiting for printing.