[abas]

Another possibility would be to have a smaller area, like a touch pad, that corresponded to the screen. Wouldn't be great for detail work, but would save space and cost and I suspect it wouldn't be too hard to get used to doing multitouch stuff on it.

[jdanieli]

I believe apple has something similar to this in the case that they have a multi-touch track pad which can recognize some multi-touch commands. I'm not sure to what extent you can use it for though. (of course, macs still have the keyboard.)