The idea was to design an app for an innovative bank current account which allows you, as bank account holder, to get multiple physical cards which you can give to the people you want, so that they are authorised to spend money on your behalf. Think about a neighbour who can then do some shopping for you, a dogsitter, whoever you want.
I have designed and animated the UI of the app, with different sections allowing you to see your multiple cards and check the transactions, top-up the cards and manage the settings.