One card

The most fundamental demand <br> <br> card card system is "information sharing, centralized control," so the design of the system should not be a simple combination of individual features, from a unified network platform, unified database, unified identity authentication system, Data transmission security, various types of management system interfaces, exception handling and other software design considerations of the technical implementation of thinking, so that the management system, the card reader terminal equipment, the overall performance of intelligent to achieve the best system design.

Due to the basic idea of ​​"information sharing and centralized control", the One Card is widely used in all walks of life, such as the campus card, corporate card, silver-school (bank-school) card, medical card and so on.

In May 2006, Beijing began to use the "municipal traffic card." From January 1st, 2007, the public bus swipes in the urban area and hits 40%, while in the suburbs it is 20%. In January 2008, all the suburbs of the urban area hit a four-fold discount.

Cards generally involve buses, taxis, and subways, and they can quickly expand into gardens, freeway tolls, and small-scale consumption. At this time, the security of the card data, especially the wallet, is highlighted. In addition to meeting the above application requirements, the WeChat non-contact CPU card also provides a more secure protection for the wallet in the card.

The concept of "card" interpretation

The card system is a smart card that implements a variety of different functions through a single card. A lot of devices on one card pass, instead of having different cards for different functions. Different cards are used on different devices. A variety of different devices are hung on a data line, communicate with the management computer through a data line, and exchange information of different data in the same system software, the same computer, and the same database. Implement card issuance, cancellation, loss reporting, card data inquiries, etc. Various functions are accurate and convenient. It is widely used in urban public transport, automatic toll highways, smart buildings, various public fees, intelligent community property management, attendance access control management, and campus and factory card systems. It integrates RF radio frequency technology, smart card application technology, computer network technology, and automatic control technology to achieve centralized management of a certain management area, enabling people to fully enjoy the convenience and safety that modern technology brings to daily work and life.

In the field of smart cards, "cards" are used more frequently in various card magazines. But what exactly is "one card?" What is the meaning of the concept? Until now, there has been no clear and satisfactory explanation.

At present, the concept of "one card" should be "one card and one library line, that is, a network cable connected to a database (PC machine), through a comprehensive software, to achieve the function of setting up IC card management, inquiries, etc., to achieve the entire system. "One card.

The following explanations are separately explained:

The so-called "one card, is to achieve a variety of different functions on the same card smart management, a card on a lot of equipment, rather than different functions have different cards, different machines are used on different cards. Some errors In view of this, since it is a "one card," the device, then all the cards (including magnetic cards, lD cards, contactless IC cards, non-contact IC cards, etc.) can read and communicate. "One card," the first requirement is that the card's read-write device must be consistent with the card. Secondly, the card must be a smart card with multi-partition and password check to ensure mutual independence, security, and versatility, such as MFARE card. With 16 function partitions with independent keys, in the M|FARE system device, as long as the MlFSREHHU card has vacancies, does not seal the password, and each device has a good agreement with each other, a company can use a variety of different devices. Use a card to connect.Different companies use the same type of equipment, the same card, as long as it is MFARE's technology, and its module system, as long as the card has an empty area, you can use, this is the so-called "a card.

The so-called "line, is a line through a variety of information, a variety of different devices are hanging on a line, through a line with a PC interface to all the equipment are stringed together for different data exchange of information. If many devices All are hung on the PC, then each device and the PC account for a line, and the PC needs to provide it with a communication interface, so that there are many devices and many communication interfaces, and the computer's communication interface is limited, and Can not meet the requirements, and in the course of installation and use, can not do so many lines are connected with the PC, this approach is undesirable.

The so-called "one database is the same software, the same PC, the same database, the realization of the card issuance, the cancellation of the card, the loss of the card, the card data query, etc., accurate and clear, convenient and quick. This is called "a ? Quot;. Nowadays, the so-called “cards on the market, that is, the company’s equipment can use the company’s card, and who’s database, who’s platform, and who’s software are distributed to their respective distribution centers. This is not a real “card.” Only in the same software can the real "card."

"One Card" structural advantage <br> <br> due to the "One Card" really means "a line a library card," will show the following unique advantages in the structure:

1. Data sharing: speeds up data exchange.

2. Comprehensive search: Because there is a total database, as long as the name of the query field is given, all relevant records can be found in this library at a time, improving efficiency and reducing errors.

3. Comprehensive statistics: Because there is only one database, reports can be generated in time, and you do not need to query each PC one by one.

4. Real-time monitoring and querying of any terminal using and recording.

5. Easy to operate: Just one, up to two steps, you can achieve the function without multiple conversions.

6. Reduce equipment investment and reduce costs.

In addition, because of the versatility and compatibility of the card, the MFARE card is still used as an example. The chip can be divided into 16 areas, and each area can be set with its own area code, and its own security, reliability, and independence. It can also be extended to the following features:

1. Function area occupation: Different functions occupy different areas and can be encrypted.

2. The software is different but can be partitioned and shared: Under different software, the functions can still occupy different areas respectively, and the encryption function can be used independently without disturbing each other.

Example: In a certain district, first install A company's "one card" device, which can realize five functions. When issuing a special IC card, it occupies five areas in the card and encrypts it. Later, B company in this In the community, terminal equipment manufactured by B company is installed, and three functions can be realized by using an IC card. In this case, the advantages of the C-card chip can be used to distribute the C-card issued by company A and then distribute it under the software of B company. It occupies three areas other than 5/16, is encrypted, and so on until all areas are fully occupied. In the future, this area can hold this IC card and pass through the terminal equipment of A and B companies to achieve "one card."