[Jatidude]

In the link you post it states "piqlWriter: data writtenas high-densityQR codesEncode binary data to 2D barcode (apply Forward Error Correction)Modulate light using a Digital Micromirror Device (DMD) to project the barcode on the film."

[Zamicol]

It's a lie. It's not a QR code. I don't know why they say it is. Look at the code. It's nothing like a QR.

They should have said "2D Barcode" but they might be assuming an ignorant audience.