Magnetic strips are thin, flexible bands made of magnetic material, commonly found on the back of credit cards, identification cards, and hotel room keys. They store data by using tiny magnetic particles that can be magnetized in different directions, representing binary information. When swiped through a reader, the strip transmits this data for processing. These strips are widely used in various industries for secure transactions and access control. The technology behind magnetic strips is based on the principles of magnetism, which allows them to be read quickly and efficiently. They are an essential part of modern electronic payment systems and identification methods.