What's the point here?
Dawn, it is not clear to me what your point is. As a user, adding Touch ID to OS X sounds good to me. You say:
< "But if Apple develops a feature to allow the Touch ID-enabled iPhone to directly unlock Macs, it will give law enforcement authorities an easier way to force suspects to unlock their Macs, versus breaking through a device's encryption." > "But?" But what?
All along reading your article from beginning to end I had the impression that the big problem with unlocking Macs with Touch ID is that law enforcement authorities can have it easier to unlock criminals' Macs. And again, what's the problem?
As a user again, if Apple adds something that makes my life easier without compromising my security and privacy I definitely welcome it. I am not a criminal, or intend to become one. This means I have nothing to fear. If, on top of making my life easier, Unlocking Macs with Touch ID help authorities get criminals faster I see no problem.
Maybe I am wrong?