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Someone has an iWatch, so the watchband on the outer
wrist
side could beam a little group of buttons onto the wrist skin
(similar to project on any surface keyboards you might have
already seen)
A camera in the wristband can tell what button is pressed.
There could just be a few buttons
rather than a keyboad.
The advantage is about twice the input area compared with
an iWatch.
some images of projection keyboards
https://www.google....projection+keyboard
[beanangel, Jan 19 2018]
[link]
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There was a company that tried to get crowdfunding to do something like this - their watch was meant to project onto the back of the hand. Never got off the ground, because projecting an image onto an irregular and moveable surface at a very shallow angle doesn't work well. |
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Human skin doesn't make a very good projection screen, anyway.
Even "white" people's skin is nowhere near white. |
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The miniature hills and valleys of the wrist could make this
one not work. I think green lasers are always green though.
Weirdly, with enough computing you could adjust the
emitted LED color blend to look right on any individuals
skin. |
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