Some applications (e.g. AppStore) can be accessed by multiple users from one or from different type of devices. For this purpose a multi-level identification is introduced.
The multi-level identification deals with varying confidentiality requirements (like different access rights or control) through multiple biometric modalities in combination with password and PIN methods. From group of biometric modalities voice and face recognition is used to identify the user. Depending on the outcome of this process, it might allow access to the system or application or request the person to enter another credentials — a username, password or PIN. In the future, systems can be extended to use iris recognition and replace the PIN or password method and thus improve security.