A color QR code on a physical medium — it...

But physical printing (CMYK) usually ruins everything. RGB channels partially bleed and mix, crosstalk starts, and the scanner goes crazy. My approach I've been working on a "spectral response normalization" model. The key isn't the paint or the material, but a color model that mimics RGB logic in a subtractive printing environment. I'll admit: I haven't done a proper paper print yet. Instead, I painted the first prototype with acrylics on canvas. How about that? 😉 The result 3 different links i