METHOD OF SECURING BANK CARDS OF ONLINE TRANSACTIONS BY TELEPHONE OR FAX

摘要

The invention relates to the field of securing online transactions, by internet telephone, or fax, or any other means requiring the disclosure of security data, from a credit or debit bank card, associated with a bank account . The invention aims to secure the security code usually inscribed on the rear face of the card, often called cryptogram. Several cryptograms are written on the bank card, and recognized by the bank. The same cryptogram can not be used for two consecutive transactions.