You can move your finger, the key will change, release it, the key will be triggered (so it's the opposite of a physical keyboard: the actual action is when you release the key, not when you push it).

Why another keyboard for Windows Mobile? Because:
- It can be used with fingers.
- It suggest word based on letter position.
- It trigger the key when your remove your finger from the screen, not when you press it.
- It can be customized.