Jon Udell on portable usability labs. I saw a demo of VisualMark this year, and it is funky. It's mac only, but worth buying a mac laptop for, and you can test anything on windows or even Linux PC's by simply connecting a cable. It works like this: get a user behind any (Windows, Mac, ...) pc or laptop. Connect your mac running VisualMark. Connect mac cameras to capture face expressions. Run.
# Jun 10, 2004