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"One could imagine a very ascetic sort of life ... where the body is ignored. This is something I've played with in my books, where people hate to be reminded sometimes that they have bodies, they find it very slow and tedious."
- William Gibson

EPR Phone  
  Telephony that uses quantum effects for transmission - and is therefore the ultimate in anti-eavesdropping technology.  

After a few minutes of studying his palms, frowning deeply, he picked up his disposable cell and slipped in a new quantum card.

Then he typed in a key code and called a dummy transponder in Nicaragua.

The dummy flashed his call to a number none of them knew, which passed it on - again through a quantum EPR cell - to yet another number.

It took several seconds to connect to the Quiet Man.

From Mariposa, by Greg Bear.
Published by Vanguard Press in 2009
Additional resources -

The "EPR" refers to the 1935 Einstein-Podolsky-Rosen thought experiment in which two particle systems interact with each other in a very particular way and are then separated. Position (let's say) is measured in one system, which then determines position in the other; momentum may then be measured in the second system, violating the uncertainty principle.

This entaglement (or "spukhafte Fernwirkung" or "spooky action at a distance" as Einstein called it) has since been proven in experiments.

It therefore follows (sfnally) that communication should be possible in such a way that it cannot possibly be intercepted (look for Sprint's "Spooky Service at a Distance" available soon!).

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Additional resources:
  More Ideas and Technology from Mariposa
  More Ideas and Technology by Greg Bear
  Tech news articles related to Mariposa
  Tech news articles related to works by Greg Bear

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