ic card can be divided into two types, one is contact ic another contactless card ic card, they all have their own advantages, but what are the advantages of contactless ic card compared with contact ic card? Lets take a look.
What are the advantages of contactless ic card compared with contact ic card
Contact ic card
Contactless ic card is passive. When the reader reads and writes the card, the signal issued by the reader consists of two parts superimposed part is the power signal, after receiving the card compared with itself LC produces resonance, providing instantaneous energy for the chip. Another part is to command the chip to combine data signal to complete data, modify, store, etc., and return to the reader.
The read-write system formed by the contactless IC card greatly simplifies the hardware structure and the operation process. At the same time, with the advanced management software and offline operation mode, data reading and writing process is more simple.
Contactless ic card
Compared with contact IC and card, contactless ic card has the following advantages.
1. High reliability: There is no mechanical contact between the non-contact IC card and the reader, avoiding various failures caused by contact reading and writing. For example, poor contact due to rough card insertion, non-card insertion, dust or oil, etc. In addition, there is no exposed chip on the surface of non-contact card, no need to worry about chip off, electrostatic breakdown, bending damage and other problems, not only to facilitate the printing of the card, but also to improve the reliability of the card.
2. The operation is convenient and fast because of the non-contact communication, read-write in 10cm card can be operated within the range, do not need to insert the card, very convenient for users to use. Contactless card use no direction, the card can be read and written in any direction.
3. Anti-conflict contactless card has fast anti-conflict mechanism, can prevent the data interference between the cards. Therefore, the reader can "simultaneously; handle multiple contactless IC cards. This improves the parallelism of the application and actually increases the working speed of the system.
4. Can be applied to a variety of applications: contactless card storage structure features can be used in different systems, the user can set different passwords and access conditions according to different applications.
5. Good encryption performance contactless card serial number is unique, the manufacturer solidified the serial number before the product leaves the factory, can not be changed. Non-contact card and reader using two-way verification mechanism, that is, the reader to verify the legality of the IC card, time IC the card also verifies the legality of the reader. Before processing, the non-contact card and the reader should be three times mutual authentication, and encrypt all data in the communication process. Related product links: bus ic card access control ic card campus ic card