Looking at the great comments - fast, hypnotical, magical, blindingly fast, love this... thought it's worth checking it out.
It's a cool invention and using it might help in quick typing, but it does have it's nemesis'. It's not 100% accurate as typing (if you type correctly) as it uses some kind of data matching with it's dictionary to find the words as you swipe across the panel. Not sure you can enter Abbreviations and some code names using this mechanism. A great invention but with not that impressive dependency.