Note that in Finland we don't have the Swedish BankID. That is a totally different system that requires Android/iOS/Mac/Windows and doesn't even work on Linux PCs due to lack of software. In Finland we can still use bank identification using the paper system (like you said above) or the various systems that different banks have. And in Finland you could also use the state issued electronic ID to login to state services like tax return etc. There is even linux software: https://eevertti.vrk.fi/en/linux-versions