I’m interested in the bank end of banks. How is a card issued to a customer? Do you print cards yourself of does MasterCard or someone similar do that? How is our data protected during that?
I would start by watching https://www.youtube.com/watch?v=4nM0AKYHLNg&feature=youtu.be
Based on previous threads I’m pretty sure they get shipped straight from the vendor to each customer.
Monzo have a few different card vendors also.
Legally the vendors can’t do anything with you data as Monzo own it not them.