Re:I tested it a while ago... (Score 3, Informative)

I'm on an iPaq, and wow, its very very intuative. Within a few minutes, im already very quick. With further dev, this could be really effecient. As to the size on the screen thing, since it predicts what you will be typing, as you start to zoom in, the letters to choose too, are there waiting for you. It's not as much of a prob as you would expect...