Why do the strips of credit cards get “De-magnetized”?
All credit cards, along with many identity cards and access cards, have a magnetic strip on their reverse side which contains information about the card and card holder. If this strip is demagnetized, the card will become useless in a card reader, regardless as to whether or not it is valid. A number of objects in daily life can demagnetize a credit card. If a credit card is handled with care, it should not become demagnetized, and if your credit card does get demagnetized, it will need to be replaced by the card issuer. When you swipe or insert a magnetized card, the card reader picks up data from the tiny iron particles in the magnetic strip. The information is contained in binary form: each particle aligns along a north/south axis with some facing up and some facing down. With a credit card, the strip contains data like the name of the cardholder, the account number, the expiration, the pin number to access the card, the security code, country in which it was issued, and other such
