Ask HN: Faster text input methods than keyboard

When I'm "in the zone" writing either prose or code, I find that I frequently am thinking faster than I'm typing. It's frustrating to not be able to type at the speed of thought even though I can hit 100 WPM on QWERTY. So far, the two fastest alternatives that I've seen are speech recognition and machine stenography (see http://www.openstenoproject.org/), both of which seem to be designed for typing valid English words, not the kinds of complex systems of strangely-spelled, hard-to-pronounce, and symbol-heavy text used in code and documentation. I don't actually have a problem with the keyboard, but typing out individual characters seems antiquated when better alternatives must exist.