Since Touch ID debuted there have been numerous reports of it not working so well for some people. From high failure rates to fingerprints becoming less sensitive over time, there's no denying some people experience problems. Steve Gibson over on TWiT's Security Now podcast recently talked about how to overtrain Touch ID to get better accurate rates. Here's how to try it:
Supposedly this method overtrains Touch ID further than what the initial registration does which results in better accuracy. I personally have never had issues with Touch ID but I've had friends who have and I've recommended this to them. Some are claiming it has worked but the key is to move your finger in very small increments at a time so each registered print has the best overall image of your print. If you want to hear Steve Gibson's entire explanation of overtraining Touch ID, be sure to check out the podcast in its entirety via the link below.
If you've been having issues with Touch ID accuracy, give this a try and let us know in the comments how it works for you. Did it make it any better or are you still getting high failure rates?
Source: Security Now
Thanks to @lionheartck for making me aware of this!