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The new BorgCo paper-cup phone looks like ... a paper cup, with a bit of string dangling from the base, which has a loop tied in the end.
Concealed in the base of the cup is a stripped-down but fully functional cell phone chassis. Control is via a bluetooth wristwatch.
To use, hook the loop of
string over a fixed point and pull it tight. Speak the name of the person you wish to converse with. The electronics dial the call, and activate speakerphone mode.
When complete, release the tension on the string. This drops the call.
Observe with amusement the bewilderment and consternation of onlookers.
Really old wiring insulation
This was before plastic insulation became common. [Vernon, Dec 07 2017]
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||Observe with bewilderment and consternation the arrival of the men in white coats.
||Why, did you phone for them ?
||I think it might be cool if the string surrounded a piece of
extendable wire (see link). When you want to make a
call, you push a button that extends the wire and thus
makes the surrounding string taut. This wire could
double as at least part of the phone's antenna. When the
call ends, a circuit triggers an unlatching mechanism that
reduces the extension of the wire and thus lets the string
||While the main advantage of this over the string in the
main text is the fact that you can still move around a lot
while holding your phone, the proper coloration of the
string might make it look like it extends into some other
dimension, thus connecting to the other paper-cup
||Wonder if there would be a way to surreptitiously
hide a Makey-makey to create a paper-drawn dial