MatchUs Board (concept | by Bhandari et al, 2008)
Both partners have a synchronized MatchUs Board which uses multi-user touch input and display technologies. Using their fingers they can draw on their board. The drawings synchronously appear on both boards.
Source: Bhandari, S. and Bardzell, S. 2008. Bridging gaps: affective communication in long distance relationships. In Proceedings of the 26th Annual CHI Conference Extended Abstracts on Human Factors in Computing Systems (CHI’08). ACM Press, 2763–2768.