A magnetic card is a kind of magnetic recording medium similar to a card, which uses a magnetic carrier to record characters and digital information for identification or other purposes. The magnetic card is made of high-strength and high-temperature resistant plastic or paper-coated plastic, which is moisture-proof, wear-resistant, flexible, convenient to carry and stable and reliable to use. For example, the bank card we use is the most common magnetic stripe card.

Magnetic cards are easy to use, low in cost and widely used, and can be used to make credit cards, bank cards, subway cards, bus cards, ticket cards, telephone cards and so on. Electronic game cards, tickets, air tickets and various transportation recharge cards. ? Today, we will use magnetic cards in many occasions, such as eating in the canteen, shopping in the mall, taking the bus, making phone calls, entering the restricted area and so on.