Are you having issues with Touch ID? Well you’re not alone, many users, including me, are having issues with Touch ID. The problem stems from the fact that the phone only records fingerprint data when you first scan your finger, it doesn’t “learn” as many were led to believe.
Some people circumvented this by scanning multiple “fingers” of the same finger to try and get the most info stored on their finger.
However, in 7.1.1 Apple has released a solution for this. According to Reddit user iOSecure:
Touch ID takes a 88×88 500ppi scan of your finger and temporarily sends that data to a secure cache located near the RAM, after the data is vectorized and forwarded to the secure enclave located on the top left of the A7 near the M7 processor it is immediately discarded after processing. The fingerprint scanner uses subdermal ridge flows (inner layer of skin) to prevent loss of accuracy if you were to have micro cuts or debris on your finger.
With iOS 7.1.1 Apple now takes multiple scans of each position you place finger at setup instead of a single one and uses algorithms to predict potential errors that could arise in the future. Touch ID was supposed to gradually improve accuracy with every scan but the problem was if you didn’t scan well on setup it would ruin your experience until you re-setup your finger. iOS 7.1.1 not only removes that problem and increases accuracy but also greatly reduces the calculations your iPhone 5S had to make while unlocking the device which means you should get a much faster unlock time.
The purchase of authentec has given Apple a huge future advantage and touch ID is most likely a temporary place holder of a future display with an embedded fingerprint sensor
After upgrading to iOS 7.1.1 have your fingerprint issues gone away? Please let us know in the comments below.