Not to say such a system couldn’t work, but a restaurant cash register is not substantial evidence that it could.
I'm not saying this has worked in the past, for a defined application, therefore it'll work everywhere. QED. I'm simply playing devil's advocate a little.
I think that while this technology would certainly fulfill a 'wow factor' quota I would enjoy, physically typing on a screen such as this wouldn't be anywhere near my preferred method.
I think many people here are underestimating—to their peril—how much of typing involve the tactile sensation of the keys. Never mind the fact that an all touchscreen keyboard destroys everything taught to you about typing and forces you to have to look at the screen to key in input[...]
I strongly disagree. I've been typing on a touch-screen based display, every day for the past five years: the till at the cafe I work at is built this way. I would say I could reasonably type just as fast on that as I could on the older, 'button-based/tactile' register we had previously. Watch any experienced server in a bar or restaurant on a 'Squirrel'-type cash register and you'll see what I mean.
The New 12" MacBook Will Have an iPhone-like Interface
The New 12" MacBook Will Have an iPhone-like Interface