1Libqrencode is a C library for encoding data in a QR Code symbol, a kind of 22D symbology that can be scanned by handy terminals such as a mobile phone 3with CCD. The capacity of QR Code is up to 7000 digits or 4000 characters, 4and is highly robustness. 5 6Libqrencode supports QR Code model 2, described in JIS (Japanese Industrial 7Standards) X0510:2004 or ISO/IEC 18004. Currently the following features are 8not supported: 9 * ECI and FNC1 mode 10 * QR Code model 1 11