I found this interesting New Scientist piece the other day:
http://www.newscientist.com/article/dn21040-avatars-with-your-body-language-get-your-point-across.html
As these sorts of technologies become more common and affordable, what does this mean for interactive exhibits and remote visitor observation? Are people more comfortable with the notion of being “watched” by cameras today than they were 10 years ago?