Michael, You are right there is loss of control, but you have to give a damn for it to be a problem. I go to conferences for the same reason I joined AOIR and this list serve. To meet people with whom I share a common interest. As the saying goes, "You have to kiss a lot of toads to find a princess (or a prince)." I found it very efficient in weeding out the toads from the princesses. Control was lost with the amount of information I gave up at registration, not at the chance encounter. In any event it was helpful in finding people of interest. The tool of RFID and its potential is cross-disciplinary, enables potential not available previously and is revolutionary for social research. Subjects can opt in or out. In reality it is no different than research on social groups using the internet except the network is smaller and easier to manage. Reid ________________________________ Dr. W. Reid Cornwell The Center For Internet Research P.O. Box 6369 Breckenridge, CO 720.212.0719 (phone) 970.485.5109 (mobile) wrc@tcfir.org http://tcfir.org