Swedish personal number generator

Use of Personnummer (Personal Identification Number)

Swedish personal identification numbers are widely used throughout the society to identify people. It works much like the social security number in the USA. The Swedish personal identification number consist of the date you are born, followed by three identification digits (the third identification number is odd for people identified as male at birth, and even for women) and a trailing checksum from the Luhn algorithm (based on six number date format and the three identification numbers).

Centenarians

Most of the time the personal identification numbers are used with 10 digits; six for birth date and the four last digits for identification and checksum. Since a two-number birth year representation would make it possible to confuse people older than 100 years with young people with the same two-number birth year representation some means of distinction between these are sometimes required. The official way of doing this is by substituting the regular dash between the birth date and the four trailing digits with a plus sign instead.

Samordningsnummer

People that are not residents of Sweden don't have personal identification numbers, but to enable authorities to coordinate their work to help the individual a Samordningsnummer is used. It's like a regular Personnummer, but with 60 added to the day in the month.

Use of Personnummer for gender identification discouraged

Many decades ago a part of the Personnummer was used for identification of what hospital/region a person was born in. However, that became obsolete as the praxis was abandoned.

The same thing seem to be happening to the gender digit of the Personnummer. Nowadays gender classification is not easily squeezed into the binary format of the Personnummer odd/even categories. Opinion is closing in on removing the use of Personnummer for gender classification, as has already been decided in for example Norway.

GDPR

GDPR is a law that states that you as an individual should know how your personal information is being used. Depending on who you ask, this may be interpreted so that you cannot use any personal identification number that someone else has, even if there is no connection at all to the task you are performing. Hence, this utility also has the ability to fetch un-used Personnummer from Skatteverket, the authority in charge of Swedish Personnummer. Since no-one is using them they are safe to use. However, since the API to Skatteverekt is a bit limited in its query parameters, some other utility functionality then has had to be disabled when used with GDPR safe Personnummer.