Our current research project is on the ability of cell phones to scan designer QR Codes (QR Codes with images in them or where they have been modified to be more artistic). Our survey is open to everyone who has a cell phone. If you want to take it, the link is http://www.surveymonkey.com/s/QRCode_Research.
Be sure to check back here from time to time as we will be posting inital results on a regular basis. The current version (1/9/2013) can be seen here (PDF).