henkilötunnuksissa

Henkilötunnus, often abbreviated as HETU, is a unique personal identification number used in Finland. It is assigned to individuals who are registered in the Finnish Population Information System. The purpose of the henkilötunnus is to facilitate various administrative processes, including social security, taxation, healthcare, and banking. It ensures that individuals can be uniquely identified for official purposes.

The structure of the henkilötunnus consists of a personal date of birth, a unique three-digit sequence, and a check character. The first six digits represent the day, month, and year of birth in DDMMYY format. The following three digits are assigned sequentially to individuals born on the same day and are also used to indicate gender. The final character is a check digit calculated using a specific algorithm, which helps to prevent errors in data entry.

Finnish citizens, as well as foreign nationals residing in Finland and those with a significant connection to the country, are issued a henkilötunnus. The personal identity code is considered confidential information and its use is strictly regulated by law. Access to and use of the henkilötunnus is limited to authorized entities and for specific legal purposes. The privacy and security of this sensitive personal data are paramount, and measures are in place to protect it from misuse.