The RF card is in a non-contact operation state during reading and writing, which avoids erroneous operations such as reading and writing errors caused by poor contact, and avoids the influence of external harsh environment such as dust and oil on the card.
The operation is simple and fast - the RF card adopts the wireless communication method, and has no direction requirement when used, so it is very convenient to use.
The anti-collision-RF card has a fast anti-collision mechanism to prevent data interference between cards, so the terminal can process multiple cards at the same time.
It is convenient for one card to use: There are multiple partitions in the RF card, and each partition has its own password, so different partitions can be used for different applications, and one card can be used for multiple purposes.
Compared with contact IC cards, RF cards have the following advantages:
High reliability - no mechanical contact between the card and the reader, avoiding various faults caused by contact reading and writing. For example: failure due to rough card insertion, non-card foreign object insertion, dust, oil, etc. caused by poor contact;
There is no exposed chip on the surface of the card, no need to worry about chip falling off, electrostatic breakdown, bending damage and other issues;
The operation is convenient and fast - due to the non-contact communication, the reader can operate the card in the range of 1cm-10cm, so it is not necessary to insert and pull the work like the IC card; the non-contact card has no directionality when used, and the card can be arbitrarily swept. Over the surface of the reader, can greatly improve the speed of each use;
Anti-collision-radio card has a fast anti-collision mechanism to prevent data interference between cards, so the reader can process multiple non-contact RF cards "at the same time";
Wide application range - The memory structure of the RF card makes it more versatile; it can be applied to different systems, and users can set different passwords and access conditions according to different applications;
Good encryption performance - the serial number of the RF card is unique. The manufacturer has already fixed the serial number before the product leaves the factory and cannot be changed.
The two-way authentication mechanism is adopted between the RF card and the reader, that is, the reader verifies the legality of the RF card, and the RF card also verifies the legality of the reader; before processing, the card and the reader perform three mutual authentication, And all the data is encrypted during the communication process. In addition, each sector in the card has its own operating password and access conditions.
At present, RF cards have been widely used at home and abroad, such as Seoul, Brazil, Canada's bus, subway toll system. China, Shanghai, Zhuhai, Taiyuan and other cities have also issued bus cards, as well as road tolls, parking fees, access control systems, time and attendance systems and shopping toll systems, which are widely used in every part of our lives.
Marine copper needle valve,copper needle valve,Marine copper needle valve size
Taizhou Jiabo Instrument Technology Co., Ltd. , https://www.jbcbyq.com