Radio Shack sells a wireless transmitter/receiver for video that is
half decent, and cheap (I believe around 150). I've seen people using
it for "wearable computing" experiments around my lab. They are
portable, although maybe a little bulky for a dancer. Also check for
video-based electronic baby-sitters, they might provide you with a
ready-to-use solution for your needs.
There are also some very good small cameras (but expensive) that can
be used. I'll try to get more info on those...
-- Claudio Pinhanez
MIT - Media Laboratory 20 Ames Street - Room E15-368C Cambridge - Massachusetts MA 02139 - USA
Tel: (617) 253-0335 Fax: (617) 253-8874 E-mail: firstname.lastname@example.org URL (research): http://www.media.mit.edu/~pinhanez (personal): http://www-white.media.mit.edu/~pinhanez/