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Security Protocol for NFC payment

Question asked by Alyaa 1190 on Aug 15, 2016
Latest reply on Aug 26, 2016 by Bill Krakar

:  During an offline transaction, (Point of sale) has no internet , the payment terminal cannot verify if the client’s payment device has been revoked. So, a malicious person can use for example a revoked bank card to perform unauthorized transactions . what's the opinions to solve This vulnerability.

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