One-Handed Keyboards

Looking at the design of the Citta Kee4 Keyboard, you may wonder about how this gadget works. Featuring only four keys (hence its name), this piece can somehow allow you access to all 26 letters of the alphabet.

Using a special typing technique, the Citta Kee4 Keyboard can be controlled using either rocking or rolling keystrokes. Although only a prototype at the moment, it can prove very practical for instances where you only have one hand to type.