You can secure your iOS devices with the help of Touch ID. You can make purchases through the App Store or the iTunes store. You can access this on iPhone 5s and later models and the iPad mini3/4, iPad Air2 and the iPad Pro that is running in ‘iOS 12, 11 and 10’.
Touch ID is Apple’s name for the new biometric fingerprint technology of authentication. It has an amazing feature that it allows you to enrol multiple fingerprints, it even knows the people you have faith upon. Touch ID claims to do for the authentication whatever iCloud did for the backup and restoration.
How to use it?
Simply keep your finger on Home Screen and your phone will get unlocked. It is a highly secure and convenient way of accessing your phone. Your purchases were not this simpler ever. Your purchases are approved only through a fingerprint. The fingerprint can approve the purchases from the iTunes store, App Store and iBooks store.
Although several iPhone users have complained that they can’t activate Touch ID once updating to iOS 11 or latest iOS12. This guide will show you to come over with this problem.
How to troubleshoot ID/Fingerprint not working issue on iOS 11/12
1. Head over to Settings>Touch ID and Passcode.
2. Turn off the iTunes and App Store.
3. Reboot the iPhone or iPad.
4. Go back to Touch ID and the Passcode in the Settings.
5. Turn the iTunes and App Store back to On.
6. Click on Adding a Fingerprint for adding another fingerprint.
7. Remove and re-add the fingerprints.
8. Go to Settings>Touch ID and Passcode>Type the ‘passcode’ of the gadget>scroll down to look for the fingerprints.
9. Click on the fingerprint that you like to delete.
10. Click on Delete.
11. When the registration process is going on, ensure that the finger is getting properly scanned and try some different angle.
12. You require to wipe away any sweat or liquid from your finger.
13. Wipe out both the things, your finger along with your home button.
14. Compell Restart your iOS devices.
15. Hold the Wake and the home buttons at a similar time for more than 10 seconds, around 15-20 seconds till the logo of Apple shows.
16. You can also go for restoring if you are not happy with the restart process.
17. Take the help of iTunes to back up your gadget.
18. Now connect the iDevice to the system and download iTunes for restoration for your iPhone.
If sometime in future, you got to see any other issue with the Touch ID after the iOS 11/12 update. Users can go through the above-written steps.
Source: hp printer support phone number | Touch ID Not working