- Wikipedia: Barcode – lots of info
- BarCode – a good wiki page w/ info on codes and implementations
- Semacode – for cell phones, see also the Java creator
- 2D barcode PDF417 library – GPL/LGPL/MPL
- QR Code Generation Software – QR is big in Japan
random($foo) is the occassionally still updated blog of Leonard Lin. My pics are on Flickr, code is on Github. @lhl on Twitter. More »