Teleporting human beings is impossible. Here's how I figure that:
If you can separate every atom in a person, transport them somewhere, and reassemble them, there's no reason why you shouldn't be able to just take atoms out of nature and assemble them the same way. That means you'd be able to clone a person, but consider this: if you just clone yourself, clearly your consciousness isn't transferred.
So why would the use of your own atoms keep your consciousness? I mean clearly the resulting person would be identical to you, but you wouldn't be that person.
And yes, I'm aware this is convoluted and weird, but it does make sense.