There is a few different breeds of QR codes out there, there is some debates this particular one… IQR has an 80% higher data capacity and for the equivalent data is 30% smaller. Also the new code can be used in a rectangular format for printing in narrow spaces or on cylindrical products. I have read that smart phones cannot yet decode IQR codes. IQR is the new QR code but it will not replace the QR code becuase it has not reached it’s full potential. We would not need the extra data space anyway.