The Example system allows a User to define the types of data that an App can access and what the App may do with that data.

For example, if the User does not wish for a person to be identified:

• The face that is detected in the video may be encrypted using a separate key.
• The identity of the face may be stored in a data field which is then encrypted with a different key.

An App may be given access to the video but does not have access to the face or to the data field with the identity of the face.