It makes sense if you know about the identifying marks printers add to any output.
I thought I’ve come across some crazy conspiracy when I first found this.
https://en.wikipedia.org/wiki/Printer_tracking_dots
a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was used
When that came out, it was a way over the top silly movie.
Watching that now may prove to be a very different experience.