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    MifareClassic, abbreviated as "M1 card", is a type of IC card, which is widely used as a contactless card for urban buses, subways and gated campuses. It came out more than ten years ago and is still being used on a large scale. It is already a miracle in itself.   So, what is an IC card? We can understand it as embedding an integrated circuit chip on a plastic substrate. The integrated circuit chip can be divided into three types. One is a memory card with only storage function, similar to U disk. This product form has basically withdrawn from the market. The second kind is a logical encryption card with a simple logical encryption design. M1 belongs to this kind, which has lower security. The third is built-in CPU and processing software (also known as chip operating system, COS), also known as smart card, SmartCard, CPU card, smart card.   The main uses of IC cards are two types: secure payment and identification. Taking the design and application of M1 as an example,

  Cards are used as information carriers and are more likely to be securities. Of course, they must be properly kept to prevent loss and human damage. It is also necessary to avoid bending, scribbling, and pollution affecting the appearance and normal use of the image. For smart cards, more care should be taken.   Magnetic card-Avoid wear, avoid accessing to magnetic objects such as mobile phones or strong magnetic fields to prevent demagnetization.   ID card (RF card commonly used for attendance and food sales in the cafeteria)-Avoid bending, oil stains, closing to heat sources, punching and crushing.   Contact IC card -Keep the card surface clean, flat, and do not fold; and do not touch its metal chip to prevent electrostatic breakdown; keep away from high temperature and water, do not make the chip fall off; insert the card in the correct direction, and do not insert it backwards.   Non-contact IC card -Avoid scratching, breaking, bending, shearing, punching, soaking, approaching hi

  From the appearance, electronic documents are the same as ordinary plastic cards. RFID technology enables electronic certificates to conceal the external circuit interface used for data exchange ， so as to avoid the influence of external air, water, and corrosive liquid on it ； At the same time, the data encryption of electronic certificate shows its intelligent digital anti-counterfeiting ability. In terms of security, compared with traditional certificates, anti-counterfeiting technology has obvious advantages. Also, the electronic certificate has many outstanding advantages due to its microprocessor and logic operation functions.   (1) It Exists Independently and Cannot Be Copied Electronic certificate using RFID technology is a real anti-counterfeiting certificate. Each certificate chip has a unique, immutable and independent ID code. Combined with the authentication function of the data encryption security module, it is very difficult to copy the certificate embedded chip. So it

  Magnetic stripe card is often used in supermarkets, banks, shopping malls, and many other places. At present, the magnetic stripe card  has a large market in our life.  Due to many theft cases of the magnetic stripe bank cards in 2010, now magnetic stripe bank cards gradually develop into IC bank cards. Like an ID card, a magnetic stripe card is just a number with the form of a card, but it also has a large market in our life.   Safety and Problems of Magnetic Card A. The card has poor secrecy and security. It is easier to read out the information on the magnetic stripe, and also easier to illegally modify the content of it. So in most cases, the magnetic card is used as static data input. Although track 3 is read-write and has an amount field, it is used in the application field of small amounts, such as a telephone card.   B. It is necessary for the application system, which uses a magnetic card, to equip with a reliable computer system and central database. In the financial indust

  The access control system mainly includes access cards, control systems, and electric control lock. In the selection and sales of the access cards, the proximity smart card  is absolutely the mainstream, accounting for more than 90% of them. The card and card readers account for more than 30% of the sales of proximity card access control systems. The Proximity card is one of the cores of the whole access control system.   There are 4 types of existing access control identification methods: 1 .The password mode of a single keyboard input;   2. There are contact card (e.g. magnetic code card, iron code card), contact IC card, bar card and so on;   3. The proximity card is an inductive card. The Contactless IC card , also known as RFIC card, is an IC card that uses radio waves for read-write functions. Unlike the contact card, we don't need to insert the RFIC into a special read-write socket. We can read and write information just by shaking it above the reader; Now, there are many

  RFID electronic tags are widely used in libraries, tickets, clothing, wine industry, logistics, supply management, manufacturing and assembly. Now let's take a look at the main functions of RFID electronic tag technology.   RFID technology, which is also known as electronic tag and radio frequency identification, it is a kind of communication technology. It can identify specific targets , read and write relevant data through radio signal without establishing mechanical or optical contact between identification system and specific targets.   The main functions of RFID technology are as follows: 1. Fast scan. Automatic identification technology is a kind of technology, which uses certain identification device to complete the related subsequent processing through the related information of the identified items and provides it to the background computer processing system. 2. Small size and diversified shapes. 3. Pollution resistance and durability. 4. Reusable. The barcode is read-on

  The universality of RFID application area depends on its plentiful advantages, from production process management, goods management, traffic management, personnel management, to consumer services and other applications, which makes electronic documents have become quite mature products. We can see that RFID technology has begun to penetrate into the application of all fields, and the use value of RFID technology is getting more and more widely improved.   (1) The application of the second generation ID card As the second generation of ID card (referred to as the second generation card) adopts RFID technology, the second generation card contains chip and RF antenna, the second generation card has the characteristics of organic reading information, automatic identification and high data security. Its embedded chip saves 9 items of information of the certificate itself, including the picture of the person. The companies can read the information of the second-generation card and the info