Touch ID strange behavior IOS13

[YoussefGheith]

Touch ID strange behavior IOS13

[gabrielbiga]

In my application the fingerprint dialog doesn't show at all in iOS 13+.

[EddyVerbruggen]

Do you experience this with the demo app in this repo as well? If not, can you share a demo? And wondering if this also happens to you with FaceID?

[YoussefGheith]

Hi Eddy

I tried the demo app with my iPhone 7 (Touch ID)
The demo is a little bit buggy
the Touch dialog is taking much longer and sometimes it doesn't show at all
and i have to press the button twice.

Also i'm getting this message again
Error Domain=com.apple.LocalAuthentication Code=-1004 "User interaction is required." UserInfo={BiometryType=1,

Hi Eddy
I can confirm that the finger and face-id auth in the same app with iOS13 does not work correctly.
Sometimes the native dialog appears after a click sometime after 2x click or it does not appear but the authentication is active (so I can enter touching the fingerprint without seeing the dialog)

[EddyVerbruggen]

I just updated the demo. Perhaps the alerts were hampering performance. It's lightning fast for me (FaceID on iPhone 11 Pro). Can you re-clone and try again? And if there's still an issue please reopen and share a video of the problem.

Hi
I think there is somewhere a problem yet, please see this video (iPad 3, iOS 13.x.x latest )

https://drive.google.com/file/d/10_ZjhV7hBPmID5iZUBmEHlLQiu-PsZAS/view?usp=drivesdk

I have made some changes in my code so you can better seeing what is happening
I click at the button -> the image background is being flashed indicating the action ,after 1.5 sec the verifyFingerprint will be called -> now the native popup should be opened but nothing happens till I reach the home button with my finger -- I tried several times and sometimes the popup is visible after the 1.5 sec delay but only very rare
....
private activateScan() {
try {
this.biometricButtonState = true;
this.biometricScanActive = true;
this.scanTimerh = setInterval(()=> {
this.biometricButtonState = !this.biometricButtonState;
},500);
setTimeout(() => {
this.verifyFingerPrint();
},isIOS ? 1500 : 0);
}catch(error) {
console.log(onBiometricStackLoaded:${error});
this.feedback.error({
message: error
})
}

this.fingerprintAuth.verifyFingerprint(
{
message: 'Scan your finger', // optional (used on both platforms) - for FaceID on iOS see the notes about NSFaceIDUsageDescription
title: 'Biometric authentication',
authenticationValidityDuration: 60, // optional (used on Android, default 5)
// fallbackMessage: 'Enter Domain Password', // optional, the button label when scanning fails (default: 'Enter password')
useCustomAndroidUI: true
})
.then((enteredPassword) => {
....

[igorgiovannini]

The issue is still reproducible with the latest iOS versions (iOS 13.5, 13.5.1).
Is there a workaround?