The tree-lamp is a wall mounted modular tree of lights, which enables the user to map the relations between people. When the user touches a certain part of the tree, the corresponding person will be notified that the user has been thinking about them.
Source: Tollmar, K. and Persson, J. 2002. Understanding remote presence. In Proceedings of the 2nd Nordic Conference on Human-Computer Interaction (NordiCHI’02). ACM Press, 41–50.
