............................................................................ ii Acknowledgements.............................................................. iv Table of contents................................................................. vi Index of tables..................................................................... xi Index of figures................................................

Collaborative interactions with many existing digital tabletop systems lack the fluidity of collaborating around a table using traditional media. This paper presents a critical analysis of the current state-of-the-art in digital tabletop systems research, targeted at discovering how user requirements for collaboration are currently being met and uncovering areas requiring further development. B...