Once you notice them they are everywhere. I created a pretty one with rounded corners after I read a Mashable article about how to make them more beautiful. You scan these bar-code-like-codes on printed paper with smartphone apps using the phone’s camera and you are connected to the URL via the browser on your mobile device. Paperlinks.com have a nice app for this. I can now print this on anything and anyone with a smartphone can immediately be connected to my website, hence the “Quick Response” that the “QR” in QR codes stands for. What do you think about QR codes?