Hi Brenda,
I just found your wiki link above and sent you a membership request for your wiki. I found it very interesting and funny how you are using wikispaces in a very similar way to me. http://socialme.wikispaces.com/
My account name is myweb2learn, another similarity. I just thought to connect with you. I am a staff edutech trainer for language teachers.Ilona
A nice presentation of research on the use of QR codes/mlearning for informal learning at a zoo. Good discussion about some logistics to consider when dealing with QR codes
(I think a lesson here is that you have to think about the content associated with the code to make it interactive and engaging. The novelty of scanning will wear off pretty quickly.)