The Twiddler keyboard is designed to do all the work of a standard computer keyboard plus a lot more. With only nineteen keys, the Twiddler accomplishes this by chording.

On a piano keyboard you can play a single note by striking one key or play a chord by playing a number of keys at the same time. The Twiddler works in a similar way. You can type a character or command with a single key or with a combination of keys called a chord. Using various single keystrokes, or chords, you can type all the letters, characters, symbols and commands found on a standard keyboard. In fact, the Twiddler actually offers you over a thousand different programmable chords. And, since most of these key combinations are not preset at the factory, you can customize your Twiddler by making your own assignments to these chords. You can even override factory-preset key/chord/character assignments through the Javascript program included on the Flash Drive inside your Twiddler.