When i lived in Japan I noticed the popularity of QR codes. On a lot of billboards, in magazines and business cards you found one. I understood also the popularity: easy way to reach mobile content. After having a great presentation from Colorzip i understood also the problem. There are so many codes standards. Shotcode told me that there are more then 60. Another problem for codes to become populair in the rest of the world is SMS. In Japan you do not have sms, but you mail each other on your mobile. In the US or EU you can use SMS in stead of QR codes. Customers know SMS, so why download an application on your phone, when you can use SMS,with a WAPpush.
Now i read on AdAge that QR codes are taking of. Strange world…