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Published on Oct 5, 2010
One of the main reasons that touch tablets interested me was that you didn't have any mechanical intermediary between your hand and the tablet. Hence you could use multple hands and/or fingers, and carve up the space into multiple virtual devices, much like the window manager on a display.
This is work done in 1989-1990 by the Input Research Group (IRG) and Structured Sound Synthesis Project (SSSP) at the University of Toronto. This clip is an excerpt from a longer video which gives an overview of touch tablets: http://www.youtube.com/watch?v=62ri7C...
Ref: Brown, E., Buxton, W. & Murtagh, K. (1990). Windows on tablets as a means of achieving virtual input devices. In D. Diaper et al. (Eds), Human-Computer Interaction - INTERACT '90. Amsterdam: Elsevier Science Publishers B.V. (North-Holland), 675-681. http://billbuxton.com/windows.html