Use your CoinZoom Crypto Visa Debit card at more than 130 million locations world wide. At a point of sale terminal you may tap and pay (contactless), insert the chip, or swipe. Use your physical card for ATM withdrawals, or get cash at a merchant's payment counter. Use either your physical or virtual cards to shop online.
When you make a purchase on your CoinZoom card, it automatically converts the currency in the spend wallet to USD at the point of sale. So you must select a spend currency before you can make a purchase with your card. The card will automatically sell crypto from that wallet every time you make a purchase until you change the wallet.
If there are enough available funds in the spend wallet at the time of a transaction, it will be approved and CoinZoom will create a market order for the number of coins in the designated wallet to cover the purchase in USD. If a transaction is rejected, it may be because you don't have enough funds in that wallet. Either add funds to that wallet or choose a new coin.
For some purchases there may be a pre-authorization hold on funds, which is an amount designated to cover the total cost of an expense that has not yet been determined, such as with a purchase for gasoline. See this article on pre-authorizations.