IC cards can be divided into two types, one is contact IC card, the other is contactless IC card, both of them have their own advantages, but when contactless IC card is compared with contact IC card. What are the advantages? Let's take a look.

The contactless IC card is a passive body. When the reader reads and writes to the card, the signal sent by the reader is composed of two superimposed parts:

One is the Power Signal, which is received by the card and resonates with its own L /C to produces resonance, so as to generating an instantaneous energy to supply the chip’s work.

The other part is combined with the Data Signals to instruct the chip to complete data, modification, storage etc., and return it to the reader.

The read-write system formed by the contactless IC card has greatly simplified in both hardware structure and the operation process. At the same time, with the help of advanced management software, the offline operation mode makes the data read and write process It's even simpler.

Compared with contact IC cards, contactless IC cards have the following advantages:

1. High Reliability: There is no mechanical contact between the non-contact IC card and the reader, avoiding various faults due to contact reading and writing. For example: Failure caused by rough card insertion, non-card object insertion, poor contact caused by dust or oil stains etc. In addition, there is no exposed chip on the surface of the contactless card, so there is no need to worry about the chip falling off, electrostatic breakdown, bending damage, etc., which is not only convenient for card printing, but also improves the reliability of the card.

2. Convenient & Fast Operation: due to non-contact communication, Device can operate the card within 10cm, there is no need to insert or remove card, which is very convenient for users to use. The contactless card has no directionality when it is used, and the card can be read and written by swiping in any direction. 　

3. Anti-Collision: Contactless card has a fast anti-collision mechanism to prevent data interference between the cards. Therefore, the reader can "simultaneously" process multiple contactless IC cards. This improves the parallelism of the application and virtually increases the speed of the system. 　　

4. Suitable for a variety of Applications: the storage structure of contactless card makes it multi-purpose, and can be used in different systems. Users can set different passwords and access conditions according to different applications. 　　

5. Good Encryption Performance: The serial number of the contactless card is unique, and the manufacturer has solidified the serial number before the product leaves the factory which can not be changed. A two-way verification mechanism is adopted between the contactless card and the reader, that is, the reader verifies the legitimacy of the IC card, and the IC card verifies the legitimacy of the reader. The contactless card must be mutually authenticated with the reader three times before processing, and all data are encrypted in the process of communication.

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