On the back of the card, a 2d bar-code along with a regular one and a magnetic stripe triplicate all the information on the front.
在卡背面，2d条形码，普通码和磁条将所有信息三重储存在卡正面。
2
IC card application system is replacing magnetic bar codecard. It is an advanced system because of its advantages and the application field is very extensive.