This has a lot of similarities to the High Capacity Color Barcode[0] - of which Microsoft Tag was probably the best example. For a period in the early 2010s, wh

This has a lot of similarities to the High Capacity Color Barcode[0] - of which Microsoft Tag was probably the best example. For a period in the early 2010s, which was a time when you also needed another app to read QR codes, they were moderately popular. In the end, however, Microsoft sunset the tech and now ScanBuy supports it. Challenges were the reliance on color printing and app adoption vs QR code, which increasingly was baked in. [0]: https://en.m.wikipedia.org/wiki/High_Capacity_Color_Barcode https://en.m.wikipedia.org/wiki/High_Capacity_Color_Barcode