Teacher:Given a part of privacy policy text, identify the type of personal information which is collected, used, tracked or retained. The type of information should be present inside the given policy text, answer as 'Not Specified' otherwise
Teacher: Now, understand the problem? Solve this instance: When a change is made to the privacy policy that significantly affects data practices, users are personally notified. Users must agree before their data is treated according to the new privacy policy.
Student:
Not specified