[felurx]

In Germany (/ the EU?) we have electronic ID cards that can be used for a few online services.

The physical card can communicate via NFC, and there's a smartphone app you can use with it. For PCs, you can buy some fancy NFC interface if you want, but you can also have your phone act as a reader, the PC connects to it over the local network.

Maybe something similiar could work for banking cards. They all have NFC anyways.

On the other hand, you might as well just have an app that is registered with the bank on your computer/phone (like how it works for smartphone NFC payments) and skip the card.