The ipad mini allows normal functionality while resting ones thumb on the screen. It can distinguish a resting thumb from a pointing finger.
Give it a try. However it only works with the mini at the moment, but I suspect Apple will add this hidden gem to the new thinner bezelled ipad 5
I will take your word for it. I've got an ancient G2 and even with that honking old-timey bezel I still get unintended taps from time to time. Hooray for technological solutions to fat thumbs.