Creating a Fingerprint Lockscreen with TouchID in Ionic

By Josh Morony

If you own an iOS device then you will have likely come across the TouchID feature at some point – it allows you to easily unlock your phone with your fingerprint rather than a passcode. We can also make use of this feature in our iOS applications, and thanks to a plugin designed by EddyVerbruggen we can use it directly in our Ionic applications to verify a user.

In this tutorial, we are going to use that plugin in such a way that it will force users to scan their fingerprint upon exiting (without fully closing the application) and then reentering the application. The basic flow will be something like:

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