FingerPrint authentication on server side

#1

I am trying to link the FingerPrint Authentication with the user in API/Data base, something like a token that we can compare to autorize in someparts of my application.

Android Example:
In android i am using this plugin: @ionic-native/android-fingerprint-auth

The return of fingerprint authentication success is a json like this:

{
 token: "TOKEN CODE"
 withBackup: true
}

On Android the Token always change when authenticate again. So it’s not possible to compare with the token saved on API.

IOS Example:
In Iphone i am using thig plugin:@ionic-native/fingerprint-aio

The return of fingerprint authentication success is a string like this:

Success

In IOS, they dont give me any token or key to link the account user.

Question:
There is a way to link account with the fingerprint. To allow user to loggin with the fingerprint on app?