Hi Mark and all, you may find the Familiar Strangers project interesting: http://berkeley.intel-research.net/paulos/research/familiarstranger/ Scroll down to Scenarios #1, #2 and #3 and the two papers listed below where the device was tested at ISEA 2004. cheers, marcus -- Dr Marcus Foth BMultimedia BCompSc(Hons) MA PhD m.foth@qut.edu.au - http://www.vrolik.de/ Australian Postdoctoral Fellow Institute for Creative Industries and Innovation Queensland University of Technology (CRICOS No. 00213J) Creative Industries Precinct, Brisbane QLD 4059, Australia Phone +61 7 3138 8772 - Fax 8195 - Room Z6-511 http://ici.qut.edu.au/