To work with cryptocurrency verification is not necessary. For IBAN account and Mastercard is necessary verification. This is a demant of licence for payment services and MasterCard.
What currency will these MasterCard cards work with? Is it possible for one person to order several cards at once?
If buyers of our currency are interested, they can have their own e-wallet with IBAN number and their own Mastercard. Of course this account has nothing to do with cryptocurrency exchange but the company can exchange the cryptocurrency internally and make money transfers to each account accordingly.
The MasterCard will work only with fiat money, but it possible to change cryptocurrency for fiat in internal exchange. Fiat money -euro, USD, later more currencies will be added. And yes, it is possible to have several cards.