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Sony's research lab in Tokyo have invented a new kind of wireless headphone and have put in a patent application for the technology.
The idea is that there is no need for Bluetooth or infra-red communication â€“ the audio signal is fed straight through the listener's body!
The system apparently uses the listenerâ€™s body as a capacitor with a few millions of an amp flowing through. If you want to check out the technical details, take a look at the New Scientist article which has a link to the actual patent application.