Re: Type, Fold Up Keyboard and Go, New York Times, June 1, 2006. C9.
I have never understood why someone hasn't developed a popular input device based on Morse code. The operator only needs a single key and skilled practitioners can easily communicate large amounts of information in a short time.
It seems to me that such a system would be ideal for those of us using miniature computers. It is not too difficult to learn, thousands did during World War II, but it does require intensive practice.
Maybe that is the one strike against it -- it doesn't provide instant gratification.