LAContextMBS.biometryType as Integer

This property is set when canEvaluatePolicy has been called for a biometric policy.
The default value is BiometryTypeNone.
(Read only property)

LAContextMBS.evaluatedPolicyDomainState as MemoryBlock

This property is set only when evaluatePolicy is called and succesful Touch ID authentication was performed, or when canEvaluatePolicy succeeds for a biometric policy. It stays nil for all other cases. If finger database was modified (fingers were removed or added), evaluatedPolicyDomainState data will change. Nature of such database changes cannot be determined but comparing data of evaluatedPolicyDomainState after different evaluatePolicy will reveal the fact database was changed between calls.
(Read only property)

LAContextMBS.Handle as Integer

(Read and Write property)

LAContextMBS.interactionNotAllowed as Boolean

If the context is used in a keychain query by the means of kSecUseAuthenticationContext, then setting this property to YES has the same effect as passing kSecUseNoAuthenticationUI in the query, i.e. the keychain call will eventually fail with errSecInteractionNotAllowed instead of displaying the authentication UI.

If this property is used with a LocalAuthentication evaluation, it will eventually fail with kErrorNotInteractive instead of displaying the authentication UI.
(Read and Write property)

LAContextMBS.localizedCancelTitle as String

Allows cancel button title customization. A default title "Cancel" is used when this property is set to empty string.
Requires MacOS 10.13 or newer.
(Read and Write property)

LAContextMBS.localizedFallbackTitle as String

dim lc as new MyLAContextMBS
lc.localizedFallbackTitle = "Just a test"

Allows fallback button title customization. A default title "Enter Password" is used when this property is left nil. If set to empty string, the button will be hidden.
(Read and Write property)

Some examples using this property:

• /Mac64bit/Local Authentication

LAContextMBS.localizedReason as String

A localized string from this property is displayed in the authentication UI if the caller didn't specify its own authentication reason (e.g. a keychain operation with kSecUseAuthenticationContext). This property is ignored if the authentication reason was provided by caller.
Requires MacOS 10.13 or newer.
(Read and Write property)

Some examples using this property:

• /Mac64bit/Local Authentication

LAContextMBS.touchIDAuthenticationAllowableReuseDuration as Double

This property can be set with a time interval in seconds. If the device was successfully unlocked by Touch ID within this time interval, then Touch ID authentication on this context will succeed automatically and the reply block will be called without prompting user for Touch ID.

The default value is 0, meaning that no previous TouchID authentication can be reused.

The maximum supported interval is 5 minutes and setting the value beyond 5 minutes does not increase the accepted interval.
(Read and Write property)