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Posts on QR codes — Reed-Solomon error correction, mask selection, why your printed QR didn't scan, and the real-world physics of getting bytes off paper.

  1. Why your printed QR code didn't scan — eight failure modes I keep seeing

    Restaurant menus, business cards, conference posters: the QR was generated correctly but doesn't scan in real life. Here are the eight reasons why and how to fix each.

    6 min read #qr #print #design

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