They should have mentioned JAB Code (ISO standard 23634). By default they use 8 colors or 3 bits per cell instead of the 1 bit per cell of most black and white

They should have mentioned JAB Code (ISO standard 23634). By default they use 8 colors or 3 bits per cell instead of the 1 bit per cell of most black and white codes, but can go up to 64 colors per cell (6 bits). The format also seems to be a bit more flexible and offers MUCH larger code sizes than QR at present. The goal as I recall was to store biometric or ID data locally rather than being forced to hold just a URL. It's also patent-free. https://jabcode.org https://jabcode.org