1, high reliability
There is no mechanical contact between the card and the reader, which avoids various faults caused by contact reading and writing. For example, failure due to rough card insertion, non-card foreign object insertion, dust, oil, and poor contact.
2, easy to operate, 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 directivity when used, and the card can pass over the surface of the reader in any direction. Can greatly increase the speed of each use.
The non-contact IC card has a fast anti-collision mechanism to prevent data interference between cards, so the reader can process multiple non-contact RF cards "simultaneously".
4, a wide range of applications
The memory structure of the contactless IC 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.
5, good encryption performance
The serial number of the non-contact IC card is unique. The serial number of the non-contact IC card has been solidified before the product leaves the factory, and can not be changed. The two-way authentication mechanism between the non-contact IC card and the reader is verified by the reader. The legality of the non-contact IC card, and the RF card also verifies the legality of the reader; the non-contact IC card technology is the combination of the radio frequency identification technology and the IC card technology.
From the perspective of radio frequency identification technology, it can be considered that the non-contact IC card is a relatively special radio frequency identification (ie, transponder), and its reading and writing device is a pager; if it is from the perspective of IC card technology, It is considered that the radio frequency identification product is a special non-contact IC card, and its pager is a reading and writing device. Therefore, the composition and working principle of the contactless IC card application system is very similar to that of the RFID application system.
Of course, the use of radio frequency identification technology for non-contact IC cards also has special requirements for it to meet the requirements of the card. Technically, there are two main points:
1. Due to the size limitation of the IC card, the transponder on the card cannot have a power system, and needs to be powered by the pager (reading and writing device) by wireless; 2. Due to the size limitation of the IC card, the antenna of the transponder on the card needs to be Special design, the card needs special packaging and manufacturing; 3, due to the special application environment of the non-contact IC card, the transponder on the card also needs to have the following characteristics:
Fast operation, high anti-interference, simultaneous operation of multiple cards, high reliability, etc.