QRCODE
QR code
QR code is the trademark for a type of matrix barcode first designed for the automotive industry in Japan. A barcode is an optically machine-readable label that is attached to an item and that records information related to that item. The information encoded by a QR code may be made up of four standardized types of data or, through supported extensions, virtually any type of data.The above text is a snippet from Wikipedia: QR code
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