You can make your own QR barcode - ( http://qrcode.kaywa.com/ ) and plunk it anywhere
here is one for my blog - but it can be an address, text, url, sms
Using my iPhone it scans and says http://deborahreadcom.blogspot.com
how way cool - now I just have to figure out where to use it - on my business cards, my web ?
cool toy .