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Make a Custom QR Code That Actually Looks Good (and Does Something Cool)How to Make QR Codes on iPhone or iPad. Barcodes—or in this case, QR codes—consist of basic black and white patterns that, ...
The QR code (short for Quick Response code ... The first version of the two-dimensional barcode system was small, measuring just 21 x 21 modules and capable of storing only four characters ...
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