Apple’s Cool iPhone Fingerprint ID Means You’re Screwed
blog.simplejustice.us
blog.simplejustice.us
I don't think your smeared fingerprints all over your phone are going to be high-quality enough to enable them to unlock the phone.
The process identified by the CCC crack [1] seems very involved and seems to require a lab-environment. You get 5 tries and 48 hours to unlock the phone or it will revert to passcode prompts... add in time requirement for a warrant, and this may be just enough difficulty to dissuade LEOs from attempting this method all the time.
One thing is certain, you should likely not use the simple passcode - that's brute-forceable. But a manageable complex passcode and TouchID sounds very convenient and relatively secure.
Oh, and always shut down your phone if you get pulled over. First power-on unlock mandates passcode entry.
[1] http://www.ccc.de/en/updates/2013/ccc-breaks-apple-touchid
http://webcache.googleusercontent.com/search?q=cache:T5Tk3Zb...
Fingerprints and DNA can be legally taken from you by law enforcement without your permission - but information, like your PIN #, cannot legally be forced from you.
Just one more thing to add to the "Law Breaking for Dummies" book.
Stopped reading after the first sentence.
You can hate biometrics (and I'm still skeptical in general), but Apple did a damned fine job of how they implemented it.