Thousands of iOS users are still facing Touch ID issue since iOS9 update, We expected fix in latest builds of iOS9.2 but seems like Apple not working on it. If your iOS device is ran out of warranty then you are stuck with your broken Touch ID device. Apple is only authorized to re-calibrate and replace faulty Touch ID sensor, if you tried to get it replaced or get it fixed by some third party repair shop, You will be ended up with Bricked iPhone. So beware of it.
We ourself have one unit of iOS device which is facing same problem, We tried every possible solution available on internet to re-calibrating Touch ID sensor and Restoring Firmware & Backups. Unfortunately nothing worked as we expected. After few hit and trails we did find alternate way to get our touch ID sensor to detect your finger without any hassle. It may work for some users who’s iOS device is still able to recognize finger, but wont work on those device which are not detecting fingers at all.
We created small video demonstrated the workaround for this issue. Let us know in comment in if it works for you and give thumbs up to video as well