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I need to authorize the user inside the app by using touch id or face id. I searched about this issue, but all solutions are for user login. In my case, I need to authorize the user again inside the one state of app. For instance, assume that the user logs in to my app. There is a buy button in my app and when the user clicks on it, I want to authenticate the user once more. Is there any solution for this issue? Thanks

Blazej SLEBODA
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Omidkk
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    You can use the local authentication framework to request a biometric verification. – Paulw11 Jan 18 '20 at 10:28
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