Magnetic cards should not be near high temperature or humid environment. Generally speaking, magnetic cards are made of PVC. High temperature will lead to PVC deformation and even combustion, which will directly lead to the damage of magnetic stripe. If the magnetic card is placed in a humid environment or soaked in water for a long time, it will also be damaged and eventually cannot be used. You can't let two bank cards rub together, which will damage the magnetic stripe of the bank card during sports or leisure.
Of course, we can also keep the magnetic card away from the magnetic field. If you have tin foil at home, you can wrap your magnetic card in it and protect your bank card. But to be honest, it's not like in earlier years. It takes so many procedures to get a bank card. People who hold bank cards and protect them with tin foil are either rich brothers or young people who just have bank cards. But without exception, they are all trying to protect their property.
In our daily life, we should all know some common sense. I have a certain understanding of the problem of bank cards. As long as our bank card is not lost, the wear rate of magnetic stripe is still very small.