In some countries, authentication to a wide variety of non-bank services and payments is done through bank apps. The bank has done the work to verify who you are, so they conveniently serve as the proof of your identity to everyone else.

"Going to the bank"? Banks around here began to close physical branches well over a decade ago now, and visiting one of the remaining branches often requires a multi-hour wait in the queue, if not an appointment made many days in advance.