The nerd in me was very interested to read about QR codes on Martin Tod’s blog.
A bit of tinkering around, and I’ve found a program my Nokia e65 can use to read the 2-dimensional barcodes, and a website where I can generate the barcodes, and I’m away.
Happily, the barcode reader can also read the Data Matrix format, so I’m not tying myself to one format in a Betamax moment. Irritatingly, QuickMark makes a noise whenever it has successfully decoded something. It’s a good job you can turn that off.