A detailed description of magnetic Card

English Name: magnetic card
A card-shaped magnetic recording media, with a variety of readers with the role. Magnetic card is the use of magnetic carriers recorded some information used to identify the identity card or other purposes. Depending on the use of the substrate is different from magnetic card can be divided into PET cards, PVC cards and paper cards three kinds; depending on the different magnetic structures, magnetic stripe card and the whole can be divided into two kinds of coated magnetic card.
Magnetic easy to use, cost of cheap, extremely versatile, can be used to produce credit cards, bank cards, subway cards, bus cards, ticket cards, telephone cards; electronic games, cards, tickets, air tickets and a variety of transport fare cards. Today, on many occasions that we will use magnetic cards, such as canteens, in the mall shopping, bus, called into the control region, and so forth. 

Historical overview of magnetic
The use of magnetic cards has been a long history. As the magnetic low-cost, easy to use, easy to manage, and have certain security features, so it has been the development of many world-renowned companies, especially national government departments to throw its weight behind several decades, making the application of magnetic cards is very popular all over the national life all its aspects. Call can be magnetic, plane ticket can be magnetic, the stock market can be magnetic, and so on, it is worth mentioning that the universal banking system for decades to promote the use makes the magnetic penetration has been a great development.
According to the information reported that the U.S. average (adult) people have all kinds of magnetic cards up to 4, Singapore has similar coverage. In the United States and some other developed countries, due to magnetic cards are widely used in banking, securities and other systems, the application of magnetic card system is perfect, if the existing applications of these magnetic systems, including Visa Card / MasterCard card application system, including, all are being replaced increasingly sophisticated smart card system, then at least on an annual investment of billions of dollars, and will seriously affect the lives of people use the habits and the normal operation of other applications. This is also the smart card system in the United States, European countries, slower than the development of the reason why. In the future, a very long period of time, such as the United States in particular, a bank card application system is highly developed countries, bank card applications will work with the smart card application systems co-exist in a complementary manner. Smart card security and confidentiality of the overall sex ratio of magnetic do better, but very good card applications (such as banking systems) to fill in the card itself features on the security and confidentiality of its shortcomings, it is not apparent to the user experience of two kinds of cards there are differences and impact of security features and so on. 
Classification of magnetic
1. Magnetic type: the general anti-magnetic cards (300oe)
2. High resistance to magnetic cards (3500oe)
3. Direct Tu-Indian Type: Low-resistance magnetic card (300oe) (such as: Park tickets)
4. High resistance to magnetic cards (2700oe) (such as: Subway cards, phone cards) 

Magnetic stripe and track
1. There are three track magnetic stripe. Track 1 and track 2 is read-only tracks in the use of the information recorded on when the track is only allowed to deliver and are not allowed to write or modify. Track 3 is to read and write tracks in use can read, you can also write.
2. Track 1 can record the number (0-9), letters (A-Z) and other symbols (such as brackets, separator, etc.), the largest can record 79 numbers or letters.
3. Track record of 2 and 3 of characters can only be digits (0-9). Track 2 recorded maximum 40 characters, the track record of three maximum 107 characters. 

Note card application 
    Magnetic stripe cards in use will be subject to many external factors that interfere with
☆ magnetic stripe card in purse, wallet medium-range magnetic button too close, or even come into contact with magnetic button.
☆ and Women handbags, men handbags, magnetic button too close to or contact.
☆ Address Book with with magnetic seal, laptop touch.
☆ put on a magnetic button and cell phone, car keys and other magnetic objects in contact.
☆ and cell phone electromagnetic radiation, such as the equipment can produce a long time together.
☆ with TV sets, tape recorders and other effects of strong magnetic field too close to home appliances.
☆ when used in supermarkets, and supermarkets in the anti-theft devices used in degaussing too close or even contact.
☆ multiple magnetic stripe cards put together, the contact between two magnetic strip cards.

In addition, the magnetic stripe card pressure was off for a long time knocking, exposure, high temperature, magnetic stripe magnetic stripe scratch card dirty, also will not work properly. Meanwhile, credit card transactions on the credit card device in the process of head cleaning, the aging degree of interference during data transmission, system error movements, cashier, and so may result in improper operation can not be used magnetic stripe cards. 

Magnetic International Standard
1. ISO 7810:1985 Identification cards Physical characteristics
Card provides the physical characteristics, including card materials, construction, size.
Card size: Width 85.72mm ---- 85.47mm
Height 54.03mm ---- 53.92mm
Thickness of 0.76 ± 0.08mm
Card corner radius 3.18mm
Generally speaking, the card size: 85.5 X 54 X 0.76
2. ISO 7811-1:1985 Identification cards recording technology, Part 1: letterpress
Letterpress card set character requirements (character sets, fonts, character spacing and character height).
3. ISO 7811-2:1985 Identification cards recording technology, Part 2: Magnetic Strip
Provides magnetic stripe card features, coding techniques and coded character sets.
4. ISO 7811-3:1985 Identification cards recording technology, Part 3: ID-1 type card letterpress characters location
5. ISO 7811-4:1985 Identification cards recording technology, Part 4: Read-only track the first 1,2-track position
6. ISO 7811-5:1985 Identification cards recording technology, Part 5: read and write the first three tracks here tracks 

Card security and IC Card Comparison
With the continuous expansion of card applications, the magnetic card technology, particularly in the security technology has been difficult to meet the growing requirement of high security applications. Previous card on the application of security technologies, such as watermarking technology, holographic technology, precision magnetic recording technology, as time goes by their relative safety has been greatly reduced. The basic principle of its work is relying on its own "card number" to identify different card, so when the reader card number is relatively open, relatively easy to copy.
IC card (smart card chip, a) is written on the chip, some key parameters identified. IC card, when used, must be read-write devices with unique bi-directional key authentication. The factory, the first of the IC card is initialized (encrypted); to be delivered when needed by using the IC card issuance system, the subscriber card generate their own system of private key.
Now, we have video card (details to be added).