Enter text by swiping?

This is a very interesting idea, maybe apple could implement it?

http://www.swypeinc.com/product.html

The idea is to enter words by swiping your finger over the letters on the keyboard. You type a word by running your finger over the letters in one motion, and the phone figures out the word. It seems this would be a very quick way to type, so long as the word recognition is accurate.