Apple Buys AuthenTec To Boost Mobile Security (Tech Week Europe)
Q:
Why Apple?
Why Biometrics?
Why AuthenTec?
A:
ID management on mobile devices
NFC (near field communication) technology needs a backstop
Samsung
The linked article is, itself, full of useful links for piecing together what Apple's up to.
UPDATE:
A more biometrics-intensive focus can be found here: PC World.