What happens when 2 types of magnetic cards are put together?

Try to avoid the magnetic stripe of the two bank cards overlapping together, and unintentionally place the two magnetic cards back to back, and the magnetic medium will rub against each other and collide, so it will be damaged.

Magnetic card saving precautions.

1. It is best not to put the card and magnets or magnetic things together, the magnetic hidden buckle of the lady's handbag and some medical examination equipment such as the MRI machine will also cause the magnetization of the bank card.

2. Do not put it together with metal, such as keys (especially anti-theft door keys).

3. Do not put it together with electronic products with strong magnetic field effects such as mobile phones, computers, televisions, microwave ovens, radios, refrigerators, etc.; Buy a special card sleeve and add a card sleeve.

4. Avoid the physical damage of the magnetic stripe, due to careless storage or use, the magnetic stripe card is affected by external force and the magnetic stripe information on the card is lost. Such as being compressed, broken, scratched, soiled, etc.

5. Keep away from places that are too close to high temperatures.

Magnets cannot be put together with ID cards and bank cards, and it is easy to demagnetize them.

The magnet belongs to a strong magnetic field, and the impact on the magnetic stripe behind the bank card is more obvious, if the magnetic card is often in a strong magnetic field, it may be demagnetized. If the wallet or card wallet uses a magnetic hidden buckle, it is also easy to cause the bank card to demagnetize.

There is a copper coil in the second-generation ID card, and if the copper coil is damaged, the data cannot be read. If the ID card is placed in an environment with a strong magnetic field, the built-in chip will be magnetized, resulting in the loss of information.

There will be an impact, and it is easy to demagnetize when put together, affecting normal use.

The recorded information of bank cards and passbooks is stored on the magnetic stripe on the back, and the strong magnetic field generated by the high-frequency electromagnetic waves generated when the mobile phone is working will magnetize the credit card, causing the recorded information to be disordered, resulting in the invalidation of the bank card. At the same time, some citizens stuff mobile phones, bank cards and other items in their bags, which can easily cause bank cards to be "demagnetized".

In addition, if the magnetic stripe of two bank cards overlaps each other, it is also likely to be demagnetized at the same time. In addition, the magnetic concealment of women's bags and some medical examination equipment such as MRI machines will also cause the magnetization of bank cards.

The most common magnetic cards in life are bank cards, shopping cards, etc., these cards are embedded with magnetic stripes to store information, when the magnetic stripe contacts an object containing a strong magnetic field, it will destroy the information stored in the magnetic stripe and cause "disorder", this fault is commonly known as "degaussing".

The methods to prevent magnetic card degaussing are: as far as possible away from high magnetic places around induction cookers, microwave ovens, televisions, refrigerators and other electrical appliances, try not to put them together with magnetic objects such as mobile phones, computers, handheld computers, magnets, Wenquxing, business or metals that may be magnetic, and do not throw magnetic cards in messy bags to prevent sharp objects from wearing, scratching or twisting and breaking.

Several cards rubbing against each other when placed together will not demagnetize the cards, but will cause damage to the magnetic stripe area.

Magnetic stripe cards are mainly divided into two categories, one is weakly diamagnetic and the other is strongly diamagnetic. Weak anti-magnetic properties are generally used on single-use cards such as park tickets, while strong anti-magnetic properties are often used on items such as bank cards.

For a weakly diamagnetic card, the magnetic field generated by a current of about 10 amperes can demagnetize it; For magnetic cards with strong diamagnetism, the magnetic field generated by a current of about 100 A can be demagnetized.

Daily various cards will not be demagnetized when put together, usually the bank card is demagnetized generally occurs on the magnetic stripe bank card, this kind of card is usually put together with the mobile phone will be demagnetized, this is caused by the mobile phone speaker, if it is put together with other bank cards will not be demagnetized, and now many bank cards are contact IC cards and non-contact IC cards (ID cards), the probability of demagnetization is lower, as long as it is not put together with the mobile phone, multiple cards will not be eliminated together.

The bank cards handled by users in the bank include debit cards (savings cards) and credit cards, of which debit cards are divided into one, two and three types of accounts, and one type of account is an all-round account with the most complete functions. There will be a limit on the amount of accounts used in the second and third categories, and there is no physical card for the third type of cards.

The daily limit for the second type of card is 10,000 yuan, and the annual limit is 200,000 yuan. The balance of the three types of cards cannot exceed 1,000 yuan, the daily limit is 5,000 yuan, and the annual cumulative amount cannot exceed 100,000 yuan. The second-class card is generally used in investment and wealth management after processing, and the third-class card needs to be bound to mobile banking or third-party payment platform.

Credit cards can be applied for through different channels in daily life, such as bank counters, mobile banking, bank official websites, etc., and different users get different credit lines when applying, but users must return them on time after using credit card consumption, and there can be no overdue, because penalty interest will be generated after overdue.