Virtual Keyboard a Reality
billmaly writes "Yahoo has a photo and blurb here about a Virtual Keyboard
That shows a photo and bit of text on a virtual keyboard for Palm and other mobile devices. Applications seen for mobile computing, as well as areas where a standard, physical keyboard are not practical. Very cool stuff from Siemens!"
Besides the question of how quickly and accurately this device can detect your "key taps", there's also the question of the lack of tactile feedback from a physical key press slowing you down.
Sure it's psychological, but I can remember just how painfully slow typing on my Timex Sinclair's membrane keyboard was.
Add to that the normal lag of a character appearing on the screen, and I'll hazard a guess that using the built in hand recognisition will be the way to go.