QRC - You know for kids.
QRC or Quick Response Code is a barcode that can be read by a mobile phone, you take a picture and you can then go to the url.
This seems to have been out for a while and is popularish (well in japan) and I hadn't heard of it before, which annoys me, not that I think they stole my idea, 'cos clearly it's an idea that any child who sees a long url on a print ad would think about, but it annoys me because it's right up my street and I haven't used it and now I've found it my mobile phone isn't supported by the readers I've found.. bah!
The best looking reader - http://reader.kaywa.com/
This is what I look like in QRC apparently (untested)
There is also a company that is printing QRC codes onto tshirts, ideal for people who want to encourage strangers to photograph their chests. (emmacott.com)
Come on people, sort a QRC reader out for the Sony Ericsson K850i so I can join the party.