I think this is a step-backwards. It's a terribly flawed concept for two reasons: 1) the screen is already an infinitely customisable graphical touch UI 2) yo

I think this is a step-backwards. It's a terribly flawed concept for two reasons: 1) the screen is already an infinitely customisable graphical touch UI 2) you need to set your portable device down on a flat surface to use it Without it you can easily page back-and-forth through multiple control screens each with a custom UI. You can still have a different screen for breakfast, lunch and dinner. Without it you can carry the device to a table and enter the data in situ. You can hold it in one hand and operate the device with the other. This bypasses a mobile touch device's two main assets: its portability and its touch screen!