Jpsykes has a nice piece running on their blog about QR Codes. This looks to be much better than standard bar codes, and I’m sure I’ve seen these sort of codes on the back and insides of a lot of hardware (GSM phones and batteries especially).
Stumbling across an explanative tech for something that had aroused your curiosity a long time ago, is so typical when you’re looking around on the web.
- Numeric only Max. 7,089 characters
- Alphanumeric Max. 4,296 characters
- Binary (8 bits) Max. 2,953 bytes
- Kanji/Kana Max. 1,817 characters