NEC Latticekey on show at CeBIT

We have all become accustomed to using keys with specific functions for all our devices, especially cellphones. The NEC Latticekey Interface brings a different twist as its keys are not labeled, but instead uses the screen to guide you as your fingers are placed on the keys. This could lead to a whole lot of confusion unless you’re already very well versed with the user interface. I personally think the touchscreen interface would execute this idea in a much more efficient manner, and the Latticekey Interface does nothing more but try to reinvent the wheel. What’s your take on it?