Patent ID: 8016203

Claim:
Smartcard comprising: a first microprocessor and a second microprocessor separate from the first microprocessor, the first microprocessor having a level of security that is lower than that of the second microprocessor; an interface of electrical contacts for receiving and transmitting commands from and to outside the smartcard through one of a first and a second communications channel, said interface of electrical contacts comprising separate electrical contacts for each of the first and second communications channels; means for communicating all said commands to and from outside the smartcard on the first and second communications channels through said first microprocessor; the first microprocessor comprising means for determining whether the commands from outside the smartcard are on the second communications channel and for communicating these commands to the second microprocessor only in the case of a positive determination; and communication means for communicating to and from the second microprocessor through the first microprocessor and the ones of the electrical contacts associated with the second communications channel, wherein the ones of the electrical contacts associated with the second communication channel contact a wireless communications interface of a contact reader device adapted to receive the smartcard.