A magnetic card is a card-like magnetic recording medium that USES magnetic carriers to record character and digital information for identification or other purposes.Magnetic card is made of plastic or paper coated plastic with high strength and high temperature resistance. It is moisture-proof, wear-resistant and flexible. It is easy to carry and stable to use.For example, the bank card we use is the most common magnetic stripe card.Magnetic cards are convenient to use, cheap to build and widely used. They can be used for making credit cards, bank cards, metro cards, bus cards, ticket cards and telephone cards.Video game cards, tickets, air tickets as well as a variety of transportation charge cards.Today we use magnetic cards on many occasions, such as dining in the canteen, shopping in shopping, taking the bus, making phone calls, entering the restricted area and so on.