An IC card is described which has a housing that is of low cost and which provides very good shielding against ESD/EMI (electrostatic discharge and electromagnetic interference), while securely holding a circuit board assembly and providing good contact with a ground conductor of the board. The housing...http://www.google.fr/patents/US5477421?utm_source=gb-gplus-shareBrevet US5477421 - Shielded IC card
