In the previous post we have seen the logic behind a 16 digit credit card numbers. Besides learning and understanding the logic behind a 16 digit credit card number and how much vital information those 16 or more digits conveys, it’s also equally important to safeguard that vital information. Let’s now delve into the security of credit/debit cards, risk associated with credit/debit cards, and yes the use of credit/debit cards i.e., how can you benefit more by using credit/debit cards.