You can imagine it a whole online web wallet system where you can deposit BTC and XPY and exchange your coins, meaning buy and sell for BTC.
Also you can pay your bills with XPY and use your XPY via a debit card to spend on things.
But they do not have USD or any FIAT to buy XPY or BTC to exchange them....
So my point is that if the DGB team can create such DGB/USD-wallet-exchange system along with that debit card, it could be a really solid rock thing and may get DGB to $0.1 right away? lol
Dream on ! yes ! that is how we get there
Nobody wants a debit card linked to crypto. It has been done in the past and been a failure. My DGB is for the future, not for spending.