I’ve been using Touch ID since I got an iPhone 5s in mid-October.
Generally speaking, I like it, and I find it faster than the old
swipe-and-passcode method, but I’ve felt compelled to reteach it
my fingerprints twice already. I know this sounds impossible, but
its recognition of my prints seems to decay with time.
I rescanned my fingers this weekend, and Touch ID has been
amazingly fast and accurate since then. Just as it was when I
first got the 5s, and just as it was a few weeks later when I
rescanned my fingers for the first time. Just before each rescan,
though, I was so frustrated with Touch ID I felt like throwing the
phone across the room.
Drang is not alone — I’ve had a handful of readers ask me about this recently. Makes me think there’s something to it. Me, personally, though, I haven’t noticed any drop-off in accuracy.