A Tablet built with four embedded but slightly tilted cameras in the four corners and a dedicated ARM Input processor. This detects and interprets the 'finger gestures' to enhance the touch experience and also Sketch/Write with dummy stylus/brush.
Texas Instruments Embedded Processors Wiki
The software is as complex as speech recognition. For Factory Workers, Thick Skinned or Burly Hands you could totally switch to Gesture Mode.
Even if the Tablet Sports the Gorilla Glass, a Gorilla cannot use it with a Touch Interface, no not even a Chimpanzee. So Gesture Interface in very important for Larger 10 inch tablets. Makes Text input a Breeze and Boosts Gaming and 3D Capabilities.
How would you like to Make a Painting by just a gentle Swish and Swoosh of a Paintbrush over the Tablet. Even Drum your favorite tune by beating the Air on the Top of the Tablet.
Then you could create a 3D Sculpture on a Virtual Plaster of Paris block. You just need to download the right App, chisel and chip away the Air on the Tablet. When done, print to the 3D Cloud Printer Provider, a few hours later you collect the 4 numbers of 3D Prototype Prints from the Courier Man.
DAP Technologies - Mobile Computers
Let us take the Carrom Game as a Usability or Ergonomics Experiment, this game will be very effective only with a Gesture Tablet.
Butter Fingers and Ironman Thumb Issues
Not all Men/Women/Neumen are alike. Some have movements with less control and others like Hands-on Miners or Blacksmiths have fingers with a layer of Tough Corny Coat to protect it.
We need 'Touch Gloves' or 'Touch Thimble'. These will empower even Ironman and 'The Hulk' to use a Tablet, Then only a Military Grade Space Ruggedized Version will do.