Magnetically encoded key cards, also known as magnetic stripe cards or magstripe cards, are a type of plastic card that contains a magnetic stripe on the back. The magnetic stripe is a thin layer of magnetic material that is encoded with information using a magnetic card reader. This information can include personal identification, access control information, or financial data. The magnetic stripe on the card is made up of tiny iron-based magnetic particles that are embedded in a plastic film. The particles are arranged in a series of north and south poles, which can be magnetized in different directions to represent binary data. The magnetic stripe can store up to 3 tracks of data, each of which can hold up to 210 bytes of information. To read the information on a magnetic stripe card, a magnetic card reader is used. The reader contains a magnetic head that reads the magnetic flux changes on the stripe and converts them into digital data. This data can then be used to verify the identity of the cardholder, grant access to a secure area, or process a financial transaction. Magnetically encoded key cards are widely used in a variety of applications, including access control systems, credit and debit cards, and loyalty programs. They are a convenient and secure way to store and transmit information, and their low cost and durability make them a popular choice for many organizations.
magnetic stripe, binary data, magnetic card reader, access control, credit cards
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