"Failure Is The Fog Through Which We All Glimpse Triumph"
As young children, we all find our-self indulged in the most intriguing of activities, some of which inspire outrageous ideas and others, well , get us into trouble.
when you say "Showing the bank card itself" do you mean the physical card or the virtual overlay. The physical card is meant to represent the existing means of payment that everyone currently uses eg debit card. We retained this feature as most users we interviewed wanted to keep the physical interaction involved with paying for goods and items with cash or by card. To view your finances the user scans the card, to bring up the financial overlay on the smartphone app.
The physical card acts as a key to open/show personal banking details on the app, its meant to replace logging into your account with a user name and password. I hope this helps.