Originally Posted by Shaggy
Other than that, it may come down to a tradeoff. Either a layer under the screen, a DUO type sensor, or a finger touch screen. The first two may not be as intuitive to use, but the latter will reduce your contrast. It would come down to what was more important to the user.
PVI showed a possible solution awhile back: A touch screen technology which uses pressure sensors under the display. This way you could have finger input without the loss of contrast.