The Personal Number is a unique identification number assigned to all Swedish residents. It is a 10-digit number that contains the individual's birth date and a four-digit code. It is used by the Swedish government to keep track of its citizens and residents and required when applying for jobs, opening bank accounts, and accessing healthcare services. The Personal Number also plays a crucial role in the Swedish tax system, as it is used to identify taxpayers and track their contributions. If you want to read more about the Personal Number in Sweden, you can visit the official website of the Swedish Tax Agency.