Perhaps something like colored rMQR or HCCB is helpful? https://hackaday.com/2023/07/28/color-can-triple-qr-code-capacity/ https://hackaday.com/2023/07/28/colo

Perhaps something like colored rMQR or HCCB is helpful? https://hackaday.com/2023/07/28/color-can-triple-qr-code-capacity/ https://hackaday.com/2023/07/28/color-can-triple-qr-code-cap... https://hackaday.com/2023/07/28/color-can-triple-qr-code-capacity/ https://hackaday.com/2023/07/28/color-can-triple-qr-code-cap... https://en.wikipedia.org/wiki/High_Capacity_Color_Barcode https://en.wikipedia.org/wiki/High_Capacity_Color_Barcode