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I'm trying to create Android app with secure access to keystore with biometrics.

I'm using this samples:

https://developer.xamarin.com/samples/monodroid/FingerprintGuide/ https://developer.xamarin.com/samples/monodroid/android-m/FingerprintDialog/

Everything works as should but I want to use also screen lock (Password, PIN or pattern) as fallback option. Is it possible to use this fallback with FingerprintManager or new BiometricPrompt? When I'm trying to do this with iOS, there is automatic fallback for this

Thank You for any help.

Pavol
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  • Yes, it could be achieved ,but you can use simple ways `KeyguardManager` to acheve that https://stackoverflow.com/questions/45718790/use-system-passcode-for-authentication – Leon Apr 19 '19 at 09:45
  • @LeonLu-MSFT Thank you for answer... but I need to be able to get access to secure key from android keystore with this authentication. https://developer.android.com/training/articles/keystore – Pavol Apr 23 '19 at 06:55
  • @LeonLu-MSFT I found out I can use it also with keystore... Thank You!! – Pavol Apr 23 '19 at 08:26
  • I am glad to hear that, can you share your answer, and make it, it will help others who have similar issue. – Leon Apr 25 '19 at 01:10

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