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When does LAContext: evaluatePolicy result in LAError.AppCancel?

Is it possible for the application to cancel the hint with a touch identifier specified in the LAContext - evaluationPolicy (_: localizedReason: reply :),

The documentation for enum LAError has a new case for iOS9 - case AppCancel. The header documentation clearly states that this is returned when the application revokes authentication. But I can not find any links on how to make the application to cancel authentication.

When does LAError.AppCancel return by calculatePolicy?

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I think you can try calling your device to cancel fingerprint verification.

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Source: https://habr.com/ru/post/1607922/

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