Yep: Hackers Have Already Figured Out iPhone 5 Fingerprint Scanner Hack
You guessed it. In a matter of DAYS a hacker has figured out how to override the fingerprint scanner on the iPhone 5. GOOD GOLLY!
Now of course, it would be pretty difficult. But the group of hackers said that basically all you need is the fingerprint of the person's phone. Then you mold it onto transparent plastic. BOOM you're in.
Obviously, this would be pretty embarrassing for Apple. As the new phone was released a few days ago.