http://www.antionline.com/images/ieimages/2012/03/1.jpg
I have always thought that scanning QR codes with reckless abandon was a dumb idea... Here is an example...
http://th3j35t3r.wordpress.com/2012/...pwned-the-cat/
I am not a big fan of 'th3j35t3r', and I think he has delusions of grandeur, but I still found this to be an interesting read.