in croatia there is a personal identification number as well as the unique birth number of citizen (my transaltion). the latter is what you describe and the for

in croatia there is a personal identification number as well as the unique birth number of citizen (my transaltion). the latter is what you describe and the former i think is similar to the us ssn. the former should only be known to you. you use it, for example, when you sell your property or apply for credit. i think it is a huge fraud risk, especially in times of airbnb, because at least in croatia this is written on your id and passport and the national health card