We now have a better idea about what has been causing Touch ID accuracy issues for some users, as well as what improvements were made to the system in last week's iOS 7.1.1 update. Many Touch ID errors appear to stem from bad setup scans, which prevented Touch ID from improving over time for several users. It appears that iOS 7.1.1 solves this issue, as well as reducing the number of calculations the iPhone has to make, speeding up the unlocking process, according to Reddit user iOSecure:
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