---
title: evaluatedPolicyDomainState
framework: localauthentication
role: symbol
role_heading: Instance Property
path: localauthentication/lacontext/evaluatedpolicydomainstate
---

# evaluatedPolicyDomainState

The current state of the evaluated policy domain.

## Declaration

```swift
var evaluatedPolicyDomainState: Data? { get }
```

## Discussion

Discussion The value of this property is non-nil when the canEvaluatePolicy(_:error:) method succeeds for a biometric policy or the person successfully authenticates using biometrics, following a call to evaluatePolicy(_:localizedReason:reply:). Otherwise, its value is nil. Compare the values you get from successive calls to this property to determine whether the authorized database changed. However, the value you get doesn’t describe the nature of a change; it only lets you detect if a change happens. note: The value of this property is different in different processes, so you can’t compare the value from one app to the value from another app.

## See Also

### Evaluating authentication policies

- [evaluatePolicy(_:localizedReason:reply:)](localauthentication/lacontext/evaluatepolicy(_:localizedreason:reply:).md)
- [maxBiometryFailures](localauthentication/lacontext/maxbiometryfailures.md)