I'm still waiting for transporter technology to come to pass. ...
While this would be my favorite technological advance, I don't think this one is in the realm of possibility.
As explained in a television show I watched (a Discovery show, I think...)
What you would really be building is a machine that can construct things on a molecular level from piles of loose molecules — a replicator.
So you would end up with a duplicate copy of yourself on the other end, not the same individual. Are memories really existant in molecular structure? If so, I guess it would have the same memories instead of being a like a computer with no software loaded.
But then you get into spiritual matters: the soul isn't physical at all, is it? (Assuming it exists) So you get a soul-less creature with YOUR memories on the other end.
A molecular deconstructor on THIS end would just make you cease to exist and replace you with a soul-less copy on THAT end.
I DO see a use for this machine, however: if the duplicates have the same memory — including neuromuscular training — I sure would to make a couple copies of myself. I would enter them into vale tudo and UFC matches to see how I would do
By the way ... there is a movie released last year that kind of deals with this idea, but I don't want to spoil the movie for those who haven't seen it. To name the movie would spoil the movie.