My bank (German, just like needanke’s probably is) requires that exact 2FA method once every 3 months or whenever you login via an unrecognized device. Also for every transaction you make and when you want to check bank statements more than 1 month in the past.
To log in to your account online?
My bank (German, just like needanke’s probably is) requires that exact 2FA method once every 3 months or whenever you login via an unrecognized device. Also for every transaction you make and when you want to check bank statements more than 1 month in the past.
https://en.wikipedia.org/wiki/Transaction_authentication_number#ChipTAN_/_Sm@rt-TAN_/_CardTAN