iPhone keyboard that works while you table tap
Some clever Swiss sod has developed an iPhone keyboard that turns the vibrations from your fingertips on a table into key-presses. No need for scanners or touchscreens. Just your fingers and a hard surface.
Florian Kräutli's Vibrative Virtual Keyboard uses the accelerometer in an iPhone 4 to work out which key is being 'hit', thereby turning any surface into a keyboard for your phone. Have a look.
What's neat about this development is that you could create your own keyboard out of paper and use that as a guide or, indeed, if you're confident enough, just tap a blank space. Of course, it isn't perfect and it looks like you'll get sore digits from hammering a tabletop, but still, there's something about this that could be picked up by one of the big software developers.