The IC card is also called the integrated circuit card is also called smart card, it is characterized by large capacity, read and write, has the encryption function, can record the data accurately, but also easy to use, such as card series, consumption system; ID card full identity card, is a can not be written into the card. Contains a fixed number.
ICID card inside there is a coil, then the coil and what work? The first ID card coil is a circular coil in the middle position, the distribution of cards; IC card long coil, coil in the general distribution around the edge of the card; finally, there is a ID/IC dual card, built-in ID and IC two chip. In fact, the coil is about to implement the door lock induction is the chip is a kind of authorized store through the length of the coil, there is no limit, if the IC card into the circular coil coil is also possible, as long as the chip or close point is good, but if the IC card coil may be smaller impact sensitivity card, IC card that coil is a circular coil, then the induction will be the four corners of the weak, this is according to the signal chip and the number of coil coverage to decide.
