Joe_Fo wrote:
As people are just not starting to get their 5S, these posts about "Touch ID doesn't work!" are going to grow. Nothing can be further from the truth. It does work, provided you do the initial scan properly. If it still fails, you probably have a defective phone. But if it works initially, but fails soon after, it's probably not the phone that's at fault.
I think that this is accurate. I have a replacement iPhone 5S (because of the TouchID problem) which seems to be working better. The initial scan does seem crucial. I'm not completely satisfied, but the combination of new hardware and iOS 7.0.3 seem to have helped things (knock on wood). With my previous iPhone, there were even times (admittedly rare) when it became completely unresponsive to fingerprint recognition -- no error message!
I also wonder how much the characteristics of one's skin affect recognition. I've never used the tip of my finger, but positioning seems to play a greater role than I would like.
Still, I don't really understand why recognition would be flawless initially and then become less reliable -- unless users are unconsciously changing the positioning of their fingers.