In our proposed method, we aim to use Dynamic Security Code (DSC) and employ the
visual secret sharing (VSS) technique to print the random base transparence on credit card
instead of the traditional CSC. Thus, when users need to use security code to make
transactions, they will make request to the bank through their registered mobile device. Once
the bank receives the request, it randomly picks a DSC to get the sharing image together with
the information of base transparence on the current user’s card and send this image to the
corresponding user. When users receive this sharing image, they can easily stack it with their
own base transparence and obtain the DSC for the current transaction round.