What iQR adds
An iQR code is a higher-capacity member of the QR family designed for industrial use. For the same amount of data, DENSO WAVE describes it as noticeably smaller than a regular QR code, and at its largest versions it can hold far more data than a version 40 QR code.
It can be printed as a square or as a rectangle, which helps on narrow parts. It is also designed to work with direct part marking methods such as dot peening, and the symbol can be read when printed in reversed colors or mirrored.
Versions and error correction
iQR is defined in 61 versions across its square and rectangular forms. Exact capacity figures vary by version and error correction level, so check the vendor documentation for the size you plan to use. DENSO WAVE also offers a stronger error correction option than the QR code’s level H.
Where you will see it
iQR is mainly used in factories and logistics, where the scanners are chosen together with the code. It is not a general consumer format: most phone camera apps do not read it, so a public-facing code should stay a regular QR code.