Patent ID: 8152057

Claim:
A method of authorizing a transaction between a computer and a remote server connected via a remote communications network, said method comprising the following steps: connecting a portable card reader to the computer by means of a standard communications port; reading of the card data by the portable card reader; sending of at least one item of sensitive card identification data to a server for managing sensitive data contained in readable cards via a communications network to which the computer is connected; searching for the unique set of sent data in an electronic memory of the management server; and if the above search does not produce any positive data, generating by the management server of an instruction denying said transaction; wherein the method also includes the following steps: reading by a radiofrequency identification reading unit (RFID) situated in the portable card reader, of an RFID identification code from a separate RFID tag; sending the read identification code to said data management server; searching for the item of sensitive data—RFID identification code set; reading a unique code placed in a memory of said reader and in that in said transmission phase the item or items of sensitive card data are transmitted together with the unique code and the RFID identification code; and if the above search does not produce any positive data, generating by the management server of an instruction denying said transaction.