CHIPKARTE UND VERFAHREN ZUR KOMMUNIKATION ZWISCHEN EINER EXTERNEN VORRICHTUNG UND EINER CHIPKARTE

摘要

The invention relates to an SIM (Subscriber Identity Module ) chip card fur GSM cellular telephones containing a data processing system (20) with memory elements (200). These memory elements enable the storage of data containing at least subscriber identification data in a telephone network. Electric contacts (24) on the surface of the chip card make it possible to exchange data between the said processing system (20) and a mobile communication station (1) into which the card can be removably inserted. The chip card furthermore contains at least one coil for establishing communication via radio waves between the said processing system and an external device (3) outside the said mobile communication station.