/**

 - Check if a lock screen is set on the device. (iOS 9 or higher).

 - Returns: A detector object.

 */

fileprivate func detectDeviceLock() -> Detector {

    let deviceLockSet = LAContext().canEvaluatePolicy(.deviceOwnerAuthentication, error: nil)

    if deviceLockSet == false {

        return Detector(label: DETECTION_DEVICE_LOCK_POSITIVE, detected: true, description: DETECTION_DEVICE_LOCK_DESC)

    } else {

        return Detector(label: DETECTION_DEVICE_LOCK_NEGATIVE, detected: false, description: DETECTION_DEVICE_LOCK_DESC)

    }

}