To generate the QR code:
Create config.json
{
"clientId": "Application Client ID",
"clientSecret": "Current application password",
"accountNr": "The account you want (11 digits)"
}
Run the following command
qrencode -l H -o config.png < config.json
When the password runs out (S'banken gives 3 months per password) - simply replace that and regenerate the QR code for scanning