QR Code
QR or "quick response code,like a standard bar code,is a black and white code holding valuable information. The use of QR codes is free of any license. The QR code is a clearly defined ISO standard. Den so Wave owns the patent rights. Unlike bar code,QR Code is more useful because it can store (and digitally present) much more data, like URL links, Geo coordinates,data OT text,a phone number, aftermath details, etc.
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