"They're basically selling transparent paper."
The numpad, as antiquated as it is, is still useful for many. Bankers! Gamers! Crude mathematicians! But damn it takes up so much space. That's why Mobee is letting you transform your Magic Trackpad into Magic Numpads.
Instead of charging Apple's wireless trackpad and keyboard on something keyboard-sized, slim down with the Magic Bar. The peripheral charges itself by USB, and in turn charges the keyboard and trackpad just by sliding them into place.