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User setups Windows Hello. UWP-application can authorize user.

Now user changed face in system settings. How can app detect that after it was started using UWP SDK?

Maxim Korobov
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  • Did you mean that if the user changed face in windows settings, then, if the user switched back to the app, you want to force the user to login again? – Timo Oct 17 '17 at 03:08
  • I haven't tried this feature out. But from reading docs I think in this scenario it is up to the app to decide when to re-authenticate the user. That is, the app won't get a notification of user updating face in system settings. – kennyzx Oct 17 '17 at 04:25
  • Yes. Face change event is for asking user to authenticate by login and password. – Maxim Korobov Oct 17 '17 at 05:22
  • You could use `Window.Current.Activated` event and app's `App_Resuming` event to handle this scenario when the user switch back to the app. – Timo Oct 17 '17 at 06:11
  • What should be changed after settings update? And what if the app is not working now? In ‘Android’ there is a key, which will be invalidated. In ‘iOS’ there’s a array of bytes, which you can save and check each time you want to detect fingers list changes – Maxim Korobov Oct 17 '17 at 06:17
  • Maybe, the private-public key would be updated. You could validate it in your login code block. – Timo Oct 18 '17 at 06:47

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