Recharge Card is popularly used, which always with password, account. Paper/PVC Recharge Card is broadly used, which always with password, account, mag-strip, bar code and photos. In telecom applications, there are IP tel cards, 200 cards, 201 cards, cell phone prepaid cards, cell phone IMMIT cards, smart phone IMMIT cards and so on, for which in high requirement of rigorous data secret-keeping. ...