The large amount of information stored is the advantage of the inductive lock card. It not only serves as a key, but also loads a lot of personal information. It is especially suitable for the financial industry to pay attention to the industry characteristics of “identify the right body”, and more than one card (such as entry, unlock, storage) , payment, etc.) bring the convenience of cardholders. The use of such electronic anti-theft locks requires careful storage of the card and the loss of authorization to cancel the card as soon as possible.