Difficult and also solves nothing, since you can just point the camera at a screen.
But yeah, difficult too :)
The screen is doing all kinds of crazy things that are not apparent to your eyes, but that show up clearly on camera.
For example, you'll see a sort of barber-pole effect when pointing a video camera at a raster-scan digital display whose refresh rate isn't synced to the camera's frame rate. To avoid that, sync them, or maybe use a colour e-ink display.
Alternatively, print a high-resolution version with a decent photograph printer and take a picture of the print with the C2PA camera.