The term “personal data” means any information relating to a living person who is identified or identifiable (such a person is referred to as a “data subject”). If the information can be used on its own or in combination with other information to identify a specific person, then it counts as personal data.
The GDPR gives examples of identifiers, including names, identification numbers, and location data. A person may also be identifiable by reference to factors which are specific to their identity, such as physical, genetic or cultural factors.