Magnetic stripe card is a kind of card-shaped magnetic recording media with various card readers. Magnetic card is a kind of card that uses magnetic carrier to record certain information for identification or other purposes. Currently the commonly used areas are membership cards, etc.
The working principle of magnetic stripe card and the problems that need attention in the use
Membership magnetic stripe card
The working principle of magnetic stripe card.
Magnetic stripe card on the remaining magnetic induction strength Br magnetic card plays a decisive role in the work process. The magnetic card passes through the working magnetic head with coils at a certain speed. The external magnetic lines of the magnetic card cut the coils and generate an induced potential in the coils, thus transmitting the recorded signal. Of course, the signals recorded in magnetic card operation also require a wide frequency response, low distortion and high output levels.
Since the use of magnetic stripe cards can be disturbed by many external magnetic factors, the following issues should be noted in use.
1、 Magnetic stripe cards in wallets and wallets are too close to the magnetic clasp, or even in contact with the magnetic clasp.
2. Too close to or in contact with the magnetic clasp of ladies purses and mens handbags.
3. Contact with the address book and notebook with magnetic seal.
4. Contact with the magnetic clasp on the cell phone cover, car keys and other magnetic objects.
5. Long time with cell phones and other devices that can generate electromagnetic radiation together.
6. Too close to TV, recorders and other household appliances with strong magnetic field effects.
7. Supermarket use, and supermarket anti-theft demagnetization equipment too close or even contact.
8. When the magnetic stripe card is put together, the two magnetic stripe contact each other.
Stored value magnetic stripe card
In addition, the pressure of the magnetic stripe card, folding, long time collision, exposure, high temperature, magnetic stripe scratches and dirt will also make the magnetic stripe card can not be used normally. At the same time, the cleanliness of the magnetic head, aging degree, interference during data transmission, system action errors, and improper cashier operation may lead to the use of the magnetic stripe card during card transactions.
At present, the confidentiality and security of the magnetic stripe card is poor, the information on the magnetic stripe is easier to read and illegal modification of the content on the magnetic stripe is easier, so in most cases, the magnetic card is used as static data input. So now ic card instead of magnetic stripe card, IC through the key parameters written on the chip to identify the card, IC use the card, must be through and read-write equipment between the unique two-way key authentication, higher security.
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