LocalAuthentication Namespace

The LocalAuthentication namespace provides support for TouchID.

Classes

LAContext	The context in which authentication policies are evaluated.
LAStatusExtensions	Extension methods for the LocalAuthentication.LAStatus enumeration.

Enums

LAAccessControlOperation	Enumerates access control operations for the EvaluateAccessControl(SecAccessControl, LAAccessControlOperation, String, Action<Boolean,NSError>) method.
LABiometryType	Enumerates supported biometric authentication types.
LACredentialType	Enumerates local authentication credential types.
LAPolicy	Authentication policies.
LAStatus	Status and error codes returned by methods in LocalAuthentication.

Delegates

LAContextReplyHandler

Signature for a function to be invoked in response to a EvaluatePolicy(LAPolicy, String, LAContextReplyHandler) invocation.

Remarks

The LocalAuthentication namespace, introduced in iOS 8, allows the app to require the user to authenticate with TouchID, as shown in the following example:

btn.TouchUpInside += async(s,e) => {
    var ctxt = new LAContext();
    var error = new NSError();
    if(ctxt.CanEvaluatePolicy (LAPolicy.DeviceOwnerAuthenticationWithBiometrics, out error))
    {
        var authenticated = await ctxt.EvaluatePolicyAsync(LAPolicy.DeviceOwnerAuthenticationWithBiometrics, "Authenticate to confirm message");
        if (authenticated)
        {
        //etc.
        }
    }
}