The 1949 constitution was the first to include privacy rights. In Article 57, personal privacy, as well as privacy in the home and correspondence are protected: “he Hungarian People's Republic guarantees the personal freedom and privileges of the citizens, and respects the secrecy of correspondence and the inviolability of the home” (Princeton University, “CONSTITUTION of the People's Republic of Hungary - Budapest, 20th August 1949”). In the most recent constitution from 2011, these rights are protected in Article VI (Constitute Project, “Hungary 2011 rev. 2016”).

https://constituteproject.org/constitution/Hungary_2016?lang=en https://lapa.princeton.edu/hosteddocs/hungary/1949%20Hungarian%20constitution.pdf