How to Scan a QR Code
Chances are you've seen a distinctive black-and-white square plastered somewhere on a menu, box, or subway station. These are QR codes. The initials stand for Quick Response, and these unmistakable square codes were designed to pack lots of information into an easy and fast-scanning format. They were invented in 1994, grew insanely
https://www.greenground.it/2021/08/12/how-to-scan-a-qr-code/
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