This tech is, whilst gaining a lot of traction now, still very much in its infancy. That said if they can refine it we could very well see a huge change in how we interact with products and machines.
Biggest problem I can see though is remaining focused. With a keyboard or camera I can let my mind wander, pause and get distracted. If I have to "brain" think everything I can see that a moments distraction might well cause a sudden problem. Still neat to think that we are living in the future today!
Which pretty much kills this whole brainwave camera concept right there - I mean if you were to be watching something like that, I'm seriously doubt you'd be able to concentrate enough to think about taking the picture.. lol