With a wide range of credit cards to choose from, the most important factor to be considered is the kind of benefits every credit card can provide. You need to make a credit card comparison based on the interest rates, annual fees and balance transfer facilities offered by every credit card. A credit card test is highly essential to make a proper choice. Credit cards will display your full name and your card number. It is necessary to safeguard your credit card number from being hacked. With advancement in technology, credit card hacking has increased to a greater extent. In order to stop such an act, a number of credit card companies offer credit cards with identity proof check. Often a credit card test will determine the validity of your credit card number. This is very essential because; a valid credit number is essential to access your account. Several credit card companies make use of mathematical formulas to generate a series of valid credit card numbers. A number of credit card users opt for a credit card test to check for their card validity and also for their credit limit. With this information in hand, they can plan their finances accordingly. Many websites publish unique credit card numbers which the card holder can make use of in order check whether their card number is valid or not.