Under changes to the so-called My Number system, personal ID numbers can be linked to people’s bank account numbers from 2018. Although such links will be made initially on a voluntary basis, the government is considering making it mandatory from 2021.
The revision will also expand the use of ID numbers to track records of vaccinations and health checks.
Under the My Number system, all residents, including non-Japanese, will be assigned a 12-digit identification number starting in October.
The government is set to start using the ID from January next year for administrative purposes such as taxation and social welfare benefits.
The change will allow companies to use massive amounts of personal information, dubbed “big data,” for commercial purposes.