Input or Output device ???

I have just read quite an intersting article on the BBC website, regarding computer hackers logging our keyboard inputs !!

http://news.bbc.co.uk/1/hi/technology/7681534.stm

How scary a thought is that,not only do we have to be on gaurd with details we enter on the internet it now seems we have to be careful what we enter at all.

I guess the next step is for people to hack our thoughts !!!