It's no longer a novelty to see a pixel QR barcode on the product packaging. Although it is more complicated than a regular bar code with stripes and it is undoubtedly more reliable. The technology of QR codes contains redundancy (duplication of information) and a checksum. Therefore, even with 30 percent code corruption, it can be read. And the checksum ensures that it is read correctly.
This code safety margin allows you to read it to various mobile devices, with low resolution cameras or in low light (falling shadows).
Due to the fact that the resolution of modern cameras on mobile devices is quite high, the redundancy of the code is no longer so relevant, so the placement of the image inside the code has become fashionable. Typically, this is a company logo. But it may be a small text. For example, the URL of the site, encoded in this code. This will let you know the contents of the code, without a scanner (smartphone).
Typically, images or text are place ...
