Any information about any person by which that person can be identified. Below you will find examples of personal data that can be used to identify an individual.
| Name | Address (in combination with name and surname) | Birth number |
| Number of personal document | Email address | Phone number |
| Date of birth | Criminal record extract | IP address |
| Photography | Education | MAC address |
| Relationship | ID of company | Vehicle registration plate |
In addition to the above, special categories of personal data need to be carefully protected, including:
Race or ethnic origin
Political views
Religion and philosophical beliefs
Trade union membership
Genetic and biometric data
Health condition
Sex life and orientation