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In this paper, the authors discuss how to prevent user's passwords from being stolen by adversaries in online banking and automated teller machines. They propose dynamic password mechanisms in which a user has a mobile, in that mobile the dynamic password scheme is implemented using Android Operating System, so dynamic password requires a small amount of human computing to secure users passwords. Among the schemes, they have a default method (i.e., traditional password scheme), system recommended functions, user-specified functions, user-specified programs.
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