How do QR codes work? The checkerboard patterns taking over the world, demystified. Go to https://Saily.com/veritasium and use the code ‘veritasium’ to get a...
If he didn’t, one of the several other 2D barcodes would have caught on. I see non-QR ones around pretty often, though usually in industrial applications.
If he didn’t, one of the several other 2D barcodes would have caught on. I see non-QR ones around pretty often, though usually in industrial applications.
I remember back around 2009, there were a few of these in the newspaper: https://en.wikipedia.org/wiki/High_Capacity_Color_Barcode
I don’t know how well it worked given the loose color registration. I didn’t have anything that could read them at the time.
Are you sure they weren’t just test colors? Most newspapers have them.
I cannot imagine what information they needed to encode that required that level of information density.