I mean, years ago my local bank had an online banking system, where your PC had to dial-up their local server for any operations - and the authentication key wa

I mean, years ago my local bank had an online banking system, where your PC had to dial-up their local server for any operations - and the authentication key was on a floppy. Which meant that yes, you needed to visit their branch once every year for a new key distributed on this physical medium. Yes, it was inconvenient, but hardly an impossible thing to do. Banks manage to communicate the PIN for your card safely every time you open an account, I'm sure this could be done as well.