Current wireless protocols alter the spin angular momentum (SAM) of radio waves to hold info, and by combining both methods the team was able to pack eight data steams into a single signal, resulting in the mouth-watering number noted above.

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With a few mouse clicks, the co-worker sent a signal over the Internet that remotely shut off the power to a single fan inside a 10-foot section of ductwork directly above the microphone.

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It is also a force in digital loop carriers, which convert multiple voice calls into a single digital signal and can use either copper or fiber-optic cables.

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Radio users are long used to single clicks moving one station, and hold-clicks for a signal seek.

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And in the current issue of Applied Physics Letters, a group led by Haroun Ahmed at the Hitachi Cambridge Laboratory in Britain reports another vital step, a single-electron transistor that, for the first time, amplifies its input signal (though only by a factor of 3.7, several hundred times more weakly than a conventional transistor does).

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Simply stated, single-frequency networks are when a broadcaster uses multiple transmitters to send the same signal over the same frequency.

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