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
One thought on “QR Codes”
I recently had a go at setting up a home item database using QR codes. Plan was to have everything of importance (cds, computer hardware and such) with a qrcode on it and a relationship to another item with its own code (such as the box its in) so I could find where it is by searching the DB. Adding items would be as easy as swiping them in front of the camera.
Unfortunately my cheap $25 AUD webcam combined with poor lighting didn’t work so well. Also the libdecodeqr library that ships with Ubuntu throws exceptions a lot (something to do with bad QR version information) ☹
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