Communicating to the outside world

I've read somewhere that it's only possible to communicate to the outside world from within lucid dreams via eye movements.
But then I realized, there's SOME people who sometimes sleep talk in their dreams...
Now, what if those sleep talkers were having a lucid dream instead? Wouldn't it be possible for them to communicate to the outside world and do things like describing the dream they are currently in?

Yes, this is possible. Here's a thread from a member who did this:

http://www.dreamviews.com/general-lu...unication.html

That's amazing! Thank you for sharing this.