We would love your response to two projects in PAD Journal 2:1 dedicated to the theme of “Audience Response!” Artists Halsey Burgund and Jim Jeffers have created interactive works with QR codes. See Burgund's "Music for Journaling", pages 60-63 and Jeffers' "Slow Cyborg", pages 79-93.
http://publicartresearch.wordpress.com/category/publications/