The new Hungarian Citizenship Act made it possible for the more than 5 million people around the world to apply for Hungarian citizenship. Over the last twelve years, more than 1 million people have applied for Hungarian citizenship based on their heritage, most of which application have been granted (the application procedure usually takes a year or so).
The most obvious beneficiaries are the ethnic Hungarians who live in the countries neighboring Hungary, usually in actually Hungarian communities, who are well aware of their Hungarian roots, and who speak Hungarian and are familiar with Hungarian traditions. At the same time, even those can apply who are not living in Hungarian communities abroad and have lost touch with their Hungarian roots. In their cases, proving Hungarian ancestry often requires the help of an expert genealogy researcher who has access to the archives of birth and marriage certificates, but in possession of the right evidence, their application is also quite straightforward.
There are various procedures available, depending on when the Hungarian ancestors in question left Hungary, and where they used to live. Learn more here.