2. Do not bend the magnetic card to prevent sharp objects from wearing, scratching or distorting the magnetic stripe. Several magnetic cards are put together and rubbed against each other. Although the magnetic card can't be degaussed, it will damage the magnetic stripe area and the card can't be used again. Therefore, it is best to put the magnetic card in a special card bag or in a protective case.
3. Magnetic cards should not be near high temperature or humid environment. Generally, magnetic cards are made of PVC, which will deform or even burn at high temperature, directly leading to the damage of magnetic strips. If the magnetic card is placed in a humid environment or soaked in water for a long time, it will also cause the card to crack and be damaged, and finally it cannot be used.
4, you can make a small protective bag with aluminum foil for the kitchen (early cigarette cases can also be made with aluminum foil layer, and you will know if the aluminum foil is burned to a corner. ), put an important magnetic card in it, which can block the interference of electromagnetic waves and magnetic fields and protect the magnetic card from degaussing.