Here is the truth. There are what, maybe several thousand Apple employees that may have a hand in development of iOS 7 at any time. And as soon as it's released, there are millions of wanna-be hackers looking to find one small exploit. Apple cannot possibly find, test, and close every exploit. It's not possible. So yeah, even the most sophisticated security systems in the world can be hacked. However, with this fingerprint method, here is my analogy.
Guy walks into the bank, asks for the key code to the vault (equivalent to guy needing to scan you finger). Guy inputs the keycode, unlocks vault, walks out with money (equivalent to guy using fake scanned fingerprint to unlock phone).
Too much needs to happen for this to be of real benefit to anyone. But it makes for great YouTube!
Bryan
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Hey, I know how to make this SUPER secure. Use your pinky to setup your phone, then cut off your damn pinky. Who needs it anyway? Now just use your 4 digit code. Done.
Bryan