Since most already have BankID, you do not have a page creating mass login with new user credentials, while security is significantly higher than your usual username / password login.
BankID is perfect for membership sites where only paying or otherwise allowing people to log in and share features or information on your web page.
With the BankID plugin, Joomla's regular login changes to BankID. A new field is added for each account with social security number and only those accounts that are "enabled" will be able to log in with their Mobile BankID app.
To get started with BankID on their web, certificates are required to purchase from their bank and all the larger banks have this. Contact your bank for more information regarding the certificates.
When certificates are organized, it's only time to go to https://joomlapro.com/product/bankid-joomla-login and buy our plugin. The plug-in is easy to install and configure, but if you still need help, just contact us firstname.lastname@example.org