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Dan Hollick 馃嚳馃嚘 on Twitter: "For the absolute nerds who made it here, a fun fact: Perhaps the coolest thing about QR codes is that Denso Wave, the company that invented them,
Kent Brewster (@kentbrew@xoxo.zone) on Twitter: "Empty QR codes. All version 4, error correction level M. No mask, then masks 1 through 8. http://t.co/MQEXtMSonQ" / Twitter
Elaboration du QR code
Let's develop a QR Code Generator, part VI: mask optimization - DEV Community
Format information generation and placement 路 Issue #41 路 nayuki/QR-Code-generator 路 GitHub
How does QR code technology work? | Digitash
Let's develop a QR Code Generator, part V: masking - DEV Community