Assistance in practical use of the regulations on personal data protection constitutes one of the priorities of the Inspector General for Personal Data Protection (GIODO). It is as important as care for the protection of our right to privacy, which gains special importance at the time of development of modern technologies. To this end the Inspector General for Personal Data Protection prepares short practical explanations and guidelines useful both to data subjects, i.e. each of us, and to those who process personal data, i.e. data controllers.