The problem with this system is that it can mean those with a D-number can have trouble accessing BankID - which is by far the most widely used - because the rules on who can obtain it aren’t clear, and Norwegian banks have their own policies about who to issue it to. SpareBank 1 Sør-Norge, one of the country’s largest banks with branches across Oslo, Stavanger, Bergen and southern Norway, said that to be granted a BankID, customers needed either a national identity number of D-number and a valid biometric passport. If you are a customer with one of the banks that have told us it issues BankID to D-number customers, it may be best to mention that in the email.