osoitekortti
Osoitekortti, often translated as address card, is a small card used in Finland to record an individual's residential address. Historically, these cards were a crucial part of the Finnish population registration system. They served as a physical record of where a person lived, making it easier for authorities to manage census data and for individuals to prove their residency.
The information typically found on an osoitekortti included the person's full name, social security number (henkilötunnus),
With the advent of digital systems and electronic population registers, the physical osoitekortti has become largely