qr-code
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How to create QRcode
I'm currently planning where to put the statusbar icon within Firefox 4, since the Add-on toolbar isn't always visible, suggestions are welcome. If you have any interest in helping develop this extension please contact me. My blog details several enhancements I would like to make but I do not have much experience developing Firefox extensions.
Mobile Barcoder :: Add-ons for Firefox
Much has been said about 2D barcodes, and the discussion has focused on the format of the 2D barcode itself -- QR Code, Data Matrix, and so on. But equally important is the format of what the barcode itself encodes. 2D barcodes encode text, generally, but that text can represent many things. Commonly, 2D barcodes encode text that represents a URL, like " http://google.com/m ".
BarcodeContents - zxing - A rough guide to standard encoding of