Why Do Credit Cards Get Demagnetized

Credit cards have a magnetic strip on their reverse side which contains information about the card and card holder. The two crucial parts of a credit card are: information embossed on the front of the card and the information encoded in the magnetic strip on the back of the card. They contain the same information. When a card is to be destroyed by the user, he or she has to destroy both the sources of information. If the strip at the back is demagnetized, the card becomes useless in a card reader no matter whether it is still valid or not. It can be demagnetized with ease as there are a number of objects which can demagnetize a credit card. » Why Do Credit Cards Get Demagnetized