What if we add color or even UV/IR to an existing QR code just to increase data redundancy? Backward-compatibility FTW!
This is being done to improve self check out speed (no more having to find the bar code) and help with tracking receipt-less returns (this box of cereal was purchased at our store).
Think of the impact on forensics when every single article contains its source of origin.
Time to start a company selling an invisible privacy spray for your cereal box that coats it in UV ink and obscures the original invisible barcode...