Smart card comprising an electronic module supported on a card body provided with a means for authenticating the peering of the module with the body

1. A smart card comprising:

a plastic card body having a cavity;

an electronic module housed in the cavity and secured thereto, the electronic module having:

a metallic electrical contact area comprising a metallic peripheral region having a thickness that is less than the thickness of the card body, and

a unit including a processor associated with a memory, the unit being fitted to a central region of one of the faces of the metallic electrical contact area, and

a plurality of through holes each including a portion passing through the metallic peripheral region of the module, and a portion that passes through the card body;

the plurality of through holes together defining one or more patterns.

2. A smart card according to claim 1 , including at least one of a first series of patterns relating to the manufacturer of the smart card and a second series of patterns specific to the particular smart card.

3. A smart card according to claim 1 , wherein each hole has a flared shape presenting a section of dimensions that increases from one end of the hole to the other.

4. A smart card according to claim 3 , including at least one flared hole of smaller-dimension section situated in a first face of the card, and at least one other flared hole having its smaller-dimension section situated in a second face of the card, said second face being opposite from the first face.

5. A smart card according to claim 1 , wherein each hole is made by laser perforation.