Recently many countries digitize payments. In other words, they convert existing payments to digital format. The most common way to automate payments is to use QR codes that are easily read by smartphones. The ability to encode a sufficiently large amount of information, high damage resistance, no n...

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 p...