The card feature on the new Global Trading Platform offers a way for users to spend the fiat in their account. You can sell cryptocurrencies for fiat and use the card to spend those assets.
To sign up, login to the Global Trading Platform and click "Add New Card" under the cards section.
Fill in the required information to sign up and order a card.
You will then receive a card in the mail to be able to spend the fiat in your Global Trading Platform account.