It appears that these QR codes are appearing everywhere :-)
The following can (see below) was passed to me by Nitin in the e-learning Team at University of Bath - an empty can, not full :-(
When read on your phone then this enables you to access the wap pepsi site (http://wap.pepsi.co.uk/m3). I have to admit, as a user experience it wasn't very satisfying as it took quite alot of fiddling so that my Quickmark reader would actually read the code. Also, very few clues to what is when, what to do with it etc., Although a url was available below. Interestingly, this was a different url.
Must say, the wap site worked wonderfully.
So what are the implications with respect to the use of QR codes in education? Well, this type of use on this product will help raise awareness of QR codes by students. A survey I'm undertaking at the University of Bath, indicates that 13% of students (sample size 1593 students) already knew what a QR code is. So any promotion in other sectors would mean the number is greater.

The amount of people who know about 2D Barcodes and how to interact with
them rises steadily. That's great! Unfortunately Pepsi is not doing this
campaign in the US (yet). We are looking forward to it!
City of Manor, Texas are literally pasting QR codes around the city. On
trucks, parks and buildings. One scan of the QR code will take you to a
page explaining the function/history of the object.
Interesting that they neglected to explain what the code was though, eh!
Ian - presumably this isn't the case in Manor if they are using them to
such an extent.