A credit or debit bank card number is important information that can tell a specialist a lot. Usually, this number consists of 16 digits, but there are cards with 19-digit and 13-digit numbers. The first digit of this number means the payment system - American Express, VISA or MasterCard. In the following digits, the bank identification number, the code within which the bank issued this card, etc. is encrypted.
Instructions
Step 1
The debit or credit card number is printed on the front of the card. To protect against fraudsters who may well generate any code, this number is also confirmed by entering additional data - the card's expiration date and the owner's name, which are also indicated under the numbers.
Step 2
Sometimes, when making a purchase of goods or services on the Internet, the system may require an additional number - the secret code of your CVV2 card, this is a three- or four-digit number that is printed after a space on the back of the card in the field for the signature of its owner.
