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TouchID Accuracy Decay

Touch ID:

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.

When I first started using TouchID, I was annoyed as heck with it. I re-programmed my thumb about six times over the first month.

Then I realized that I was probably just not programming the right part of my thumb. The next time I re-programmed my phone, I set it down and picked it up quickly. I pulled it from my pocket. I programmed TouchID the same way I use TouchID. I found that I typically touch far closer to my first knuckle when I use my phone than the first six times I programmed TouchID.

I've noticed no "decay" since this sixth time. I noticed decay the first six times because, gradually, I'd revert to the way I grab my phone and move away from remembering how I'd programmed it.

3 Responses to "TouchID Accuracy Decay"

  1. […] not sure whether the improvement is due iOS 7.0.4 or happening on a more effective training. In any case, 99% accuracy makes a world of difference. Before, I had dreaded unlocking my phone […]

  2. I've thought there was a decay and I still do. I've retrained mine at least 4 times. But the last time I did both thumbs twice and it seems to be taking longer to when I'll have to do it again. It's not as accurate as it was the day I last did it. And I too have been careful to train the way I really hold it which is more to the side than straight on.

  3. Mine was working fine for about two months (85% of the time) then deteriorated quickly over the course of a week. Now it recognizes my fingers about 25% of the time.


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