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Unobtrusive, unpretentious, and you won't accidentally leave it at home.
A pager (beeper, whatever you call it) in the form of a thin
adhesive patch. The pager would have the bare minimum of
electronics necessary: all it would do is receive a signal when
you are paged and then send current between two electical
contacts on its surface.
The patch would be worn
on the skin, under a shirtsleeve or
wherever. When someone pages you, they dial as normal and
then get to leave a message for you in a voicemail box. When
they are finished, the system sends a signal to your pager,
which applies current to your skin -- just enough to get your
attention. This tells you to call the system and retrieve your
A disadvantage of this would be that you wouldn't instantly
know who was calling you. However, I believe that is
outweighed by the unobtrusiveness and convenience of the
||Yes! I want people to be able to administer electric shocks to me from miles away!
||They're only mild electric shocks... it would probably feel
no worse than the vibrate mode on a regular pager.
Unless you're into that sort of thing. Then maybe the
intensity of the shock could be set by the owner.
||The electronics are probably
feasible (though making it
flexible may be tricky), but what
about the batteries?
||I was thinking wristwatch batteries. They're not super
thin, but they would add minimal bulk and probably still
make the patch useable.
||Piezo elements charging a capacitor?