The most common magnetic cards in life are bank cards and shopping cards. These cards are embedded with magnetic strips to store information. When the magnetic stripe touches an object with strong magnetic field (such as TV, tape recorder, mobile phone, computer, etc.). ), the information stored in the magnetic stripe will be destroyed and "disordered", which is commonly known as "degaussing".

In addition, the magnetic stripe card cannot be used normally due to the pressure, folding, long-term bumping, exposure, high temperature, scratches, dirt and other reasons on the magnetic stripe.

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The methods to prevent magnetic card degaussing are as follows:

Stay away from high magnetic fields around electric appliances such as induction cookers, microwave ovens, televisions, refrigerators, etc., and try not to put magnetic objects such as mobile phones, computers, PDAs, magnets, music stars, business cards or metals that may have magnetism together, and do not throw magnetic cards in messy bags at will to prevent sharp objects from being worn, scratched, twisted or broken; Don't store multiple bank cards together, and don't put them back to back, so as to avoid the magnetic strips rubbing against each other.

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