One of the biggest challenges to “mobile computing” (besides battery life) is outdoor readability. (If you’ve ever squinted through your sunglasses trying to dial on your windows mobile phone, you know what I’m talking about).
Recently I had an old EO 72xx UMPC upgraded to a transflective screen by Advanced Link Photonics. It cost a few hundred dollars for them to treat the LCD with some sort of new surface and then replace the touch panel with another type with some sort of glare reduction. I then brought up google maps on both units and took them outside to get a comparative.
In the picture you can see the top, washed out picture is the normal LCD, and the bottom picture is the transflectivized unit.
transflective unit in sunlight