A virtual credit card is a randomly generated 16-digit card number that is linked to a user's actual credit card but provides extra security for online purchases. It can be used like a regular credit card online by inputting the virtual number instead of the actual card number. Some key features are that the virtual card has a different number, expiration date and security code than the actual card. It provides added protection against fraud since the actual card details are not shared online. Virtual cards are managed through digital wallets and can only be used for online purchases, not in stores.