QR codes are a standard[1] (otherwise they would just be meaningless random dots in a square shape). [1] http://www.denso-wave.com/qrcode/qrstandard-e.html htt

QR codes are a standard[1] (otherwise they would just be meaningless random dots in a square shape). [1] http://www.denso-wave.com/qrcode/qrstandard-e.html http://www.denso-wave.com/qrcode/qrstandard-e.html