>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)

At least it's a bit more subtle than pretending to have mild TB ;-)

http://news.bbc.co.uk/1/hi/uk/2910119.stm

I like this one too

http://news.bbc.co.uk/1/hi/england/west_midlands/2918417.stm

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