Bank cards can be divided into magnetic stripe cards and chip cards according to their different information carriers. Yong Yang, an associate professor at the School of Electrical Engineering, Huazhong University of Science and Technology, said in an interview with Northern Network that the magnetic stripe of a magnetic stripe card is smeared on the card with liquid magnetic materials or stuck on the card with tiny solid magnetic stripes. If it is disturbed by strong external magnetic field, the information in the magnetic stripe will be destroyed, resulting in the card being unusable.

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In the case of degaussing or damaging bank cards, most banks say that they can't provide magnetic replacement or free card replacement services, and they can only apply for new cards, which will result in the cost of new cards.

For bank cards, degaussing can only be used to replenish the card, but not to replace it, because bank cards are different from supermarket cards, and the magnetic stripe of bank cards is completely sealed, so it is technically impossible to replenish the magnetic field.

Moreover, although some banks can apply for magnetic compensation now, because the bank cards of most banks in China are still magnetic stripe cards, the customer's information is on the magnetic stripe. Once criminals hold degaussed cards and ask banks to supplement their magnetic fields, it is easy to steal customers' personal information. Therefore, the position of the bank card should not be too close to the magnetic buckle; At the same time, it is best not to store multiple bank cards together to avoid degaussing.

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People's Network-Degaussed bank cards can only be replaced, and most of them cannot be magnetized.