Now there are many old bank cards, shopping cards, membership cards, etc. that use magnetic stripes to record account information. If stored poorly, it is easy to be demagnetized, causing the card to be unusable. How to prevent demagnetization of magnetic cards? Let me talk about this today.

Reasons for demagnetization of magnetic card

1. The magnetic stripe is stuck in the wallet or wallet too close to the magnetic buckle, and even comes into contact with the magnetic buckle.

2. Put it together with devices such as mobile phones that can generate electromagnetic radiation for a long time.

3. It is too close to household appliances that have strong magnetic field effects such as TVs and recorders.

4. When using in a supermarket, it is too close to or even in contact with the anti-theft demagnetization equipment in the supermarket.

5. When multiple magnetic stripe cards are placed together, the magnetic stripes of the two cards come into contact with each other.

6. Too close or in contact with the magnetic buckle of the women's leather bag or men's handbag.

7. Contact with address books and notebooks with magnetic seals.

8. Contact with magnetic objects such as magnetic clasp on the mobile phone cover, car keys, etc.

To prevent magnetic cards from demagnetizing, three aspects should be paid attention to:

1. Now some backpacks and wallets have "concealed buckles" made of magnets, and various magnetic cards with magnetic stripes should be kept away from this magnet.

2. Do not bend the magnetic card, and prevent sharp objects from wearing, scratching or twisting the magnetic strip. Several magnetic cards are placed together and rub against each other. Although the magnetic cards cannot be demagnetized, doing so will cause damage to the magnetic stripe area and the card cannot be used anymore. Therefore, it is best to place the magnetic card in a special card bag or put it in a protective case.

3. The magnetic card should not be close to high-temperature or humid environments. Generally, magnetic card materials are PVC materials. High temperatures will cause PVC to deform or even burn, directly causing damage to the magnetic stripes. If the magnetic card is placed in a humid environment for a long time or is soaked in water, it will also cause the card to be glued and damaged, and it will eventually become unusable.

4. You can use aluminum foil used in the kitchen to make a small protective bag (the cigarette box with aluminum foil layer was also formed in the early days. You can tell whether the aluminum foil is ignited or burned at a corner.), and place an important magnetic card inside to block the interference of electromagnetic waves and magnetic fields and protect the magnetic card from being demagnetized.