Unfortunately I couldn’t make the trip, but my coauthor Darren Gergle presented our paper:
Clark, A.T & Gergle, D. “Mobile Dual Eye-Tracking Methods: Challenges and Opportunities” (2011). Paper presented at DUET 2011: Dual Eye Tracking workshop at ECSCW 2011 (Aarhus, Denmark. September 25, 2011.)
at the DUET 2011 workshop at ECSCW. If you couldn’t make it, but are interested, I’ll be presenting some related work on using machine learning and dyadic gaze data for identifying speakers’ references at the dual eye-tracking workshop at CSCW 2012.