Futurology

What a useless product. I don’t even want to exchange information with people when I’m awake!

Nice try, Dream Police. Cheap Trick already warned me about you.

What possible useful information could I share while dreaming? My teeth turning into sand?

Big caveats here, no peer reviewed results etc. However, I suspect the basic principle is sound. It makes you wonder what more advanced versions of something like this could do.

This sounds really cool but also needs the user to learn a language based on facial muscle movements.

https://remspace.net/remmyo/

It's a nice proof of concept though.

Sounds like that Nic Cage movie from last year

https://en.wikipedia.org/wiki/Dream_Scenario?useskin=vector