3 ms·

What if we add color or even UV/IR to an existing QR code just to increase data redundancy? Backward-compatibility FTW!

• dsl 8y ago
  It is already in the works. In 3-5 years every big box store product will have UV QR codes on every side of external packaging that encode the existing product barcode plus a unique per item ID. 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).
  • bigiain 8y ago
    Do you have any hints as to what terms I should be googling for to find out more about this? I'm _very_ curious...
    • dsl 8y ago
      Not offhand, sorry. It came up with some engineers while I was doing a security audit on a self checkout machine.
  • jackfraser 8y ago
    > (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...
    • dwild 8y ago
      There's already invisible barcode on some backaging. I had a UV light and used it over a Pringle can and there was a code there!