Things that exist: The halfkeyboard

With the revolutionary Matias Half-QWERTY 508 Keyboard, you can type using only one hand.

The ultra-compact Half Keyboard is a one-handed version of the standard desktop keyboard. It uses full-size, high-quality laptop-style keys for excellent typing comfort and speed.

How does it work?
Typing with one hand is a lot like typing with two hands...
1. Place your hand on the keyboard, in the standard position.

2. The letters under your hand are exactly the same as on a regular keyboard. You already know how to type them – no learning required!

3. For the other half of the keyboard, you need to hold down the space bar. When you hold down the space bar, the keys under your hand change to the other half of the keyboard.

4. To type a space, just tap the space bar.

It's available here