Future tech.

If I could use any future/scifi technology that does not exist I would want an iphone that types from your thoughts. How cool would it be to be able to buy a pair of headphones that reads your mind?  You'd never have to use your thumbs again! I think it would be the best invention yet. People could be even more lazier than what they are now, but not only that if you're busy at school or work you wouldn't get in trouble for texting.