Design a scheme by which a credit card user can authenticate

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Reference no: EM133699505

Question: Design a scheme by which a credit card user can authenticate to a credit card processing company so that a merchant could be confident the user was the rightful owner of the credit card. Your scheme should have three aspects: first, for a face-to-face transaction, for example, a purchase in a store; second, for a voice transaction, for example, a purchase by telephone; third, for an electronic transaction, for example, a purchase on the Internet. Describe the difficulty for the user, for exam

Reference no: EM133699505

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