QR-Code barcode uses a small area of square modules with a unique perimeter pattern. The data encoded in a QR 2D Code may include letters, text, numbers, double-byte characters, URLs. QR-Code is developed by Denso-Wave in Japan and is one of the more popular two-dimensional barcodes. Another reason for this barcode popularity is because it is adopted by many mobile or smartphone applications for linking physical world objects to a web URL.
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