Virtual Keyboard
Archfeld sent a strange piece of technology called the Senseboard which
is a portable keyboard, except that there's really not any keys. Or a board. And it can communicate via RF for all your strange wearable applications.
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What if I need to grab a drink? What if I briefly wave my hands around? What if I scratch my head because I don't know what to type next?
I'm not sure that the language recognition and "artificial intelligence" they proclaim this thing has would make it comfortably usable, even for short periods of time. Too many little inconveniences, and things you'd have to stop doing while having a keyboard permanently attached to your hands.
Ceci n'est pas une sig
That's similar to the problem the military had when testing out the F-16, which has electric controls- the stick didn't move at all. Pilots kept complaining about it, so they put a little play into it, even though technologically they didn't need it. People like physical responses to the things they touch.
"If he thinks he can hide and run from the United States and our allies, he's sorely mistaken." Bush on bin Laden