Andrew Seddon said:
> I have an applicaton where I would like to be able to talk to somebody
> (remotely via radio). However I would like nobody around them to hear
> what is being said. Also it should not be noticable that they have any
> sort of hearing device on(e.g headphones).

I don't know, if the game show staff can figure out coughing as signals,
they ought to be able to spot the electronics even easier, they are
probably looking pretty closely now  :)

-Bob

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