An identifiable natural person is one who can be identified, directly or indirectly, in particular by reference to an identifier such as a name, an identification number, location data, an online identifier or to one or more factors specific to the physical, physiological, genetic, mental, economic, cultural or social identity of that natural person. McGraw Hill acknowledges that in the course of Subscriber's use of the Services, End Users' Personally Identifiable Information may be disclosed to McGraw Hill.