With the prevalence of the electronic commerce, the residual balance of electronic currency emerges in our lives. For example, we usually use electronic currency cards. Every card has only small balance such as $50. Sometimes, the residual value in the cards is so little that we cannot process the transactions we want with it. If collecting the balance in these cards, we can use the sum to do some valuable things. Mobile agents have many advantages in the applications of e-commerce. With mobile agents, we can conveniently collect the residual balance of electronic currency. This paper introduces an application framework in collecting the residual value from electronic accounts over the Internet.
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