QR Codes

I just read about Quick Response codes (IHT article) that are extensively used in Japan - details on wikipedia. It seems that these are very popular in Japan as a quick way to get product information off advertisements using camera phones. One code can store a very large amount of information: 4,296 alphanumeric characters, 7,089 numeric characters

Try the QR code generator. Absolutely fascinating!

Here is the QR code for my blog (http://yuviontech.blogspot.com):

This would be a great addition to print ads! Might be the way to implement electronically readable coding in advertisements. These can carry so much more information than a bar code (1990s idea).