Found this interesting device:
http://www.tabletkiosk.com/products/sahara/i400s_pp.asp
It seems to have a powered 6-pin firewire plus a non-glare touch screen and looks compact and durable.
I wonder if anyone has tried it. Looks like a perfect solution for a location shoot.
Alex
Derek, thanks for your feedback. Maybe there will be a more powerful solution next year.
Merry Christmas!