Method of preventing the unauthorized use of a user identification module

Method of preventing the unauthorized use of a user identification module

A method of preventing unauthorized use of a user Identification module (UIM) is provided. The method comprises attaching a UIM previously used with a first communication terminal to a second communication terminal, wherein the UIM is configured to have first and second card holder verification (CHV...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: KIM JANG EON
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
TRANSMISSION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
WIRELESS COMMUNICATIONS NETWORKS
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Beschreibung
Zusammenfassung:A method of preventing unauthorized use of a user Identification module (UIM) is provided. The method comprises attaching a UIM previously used with a first communication terminal to a second communication terminal, wherein the UIM is configured to have first and second card holder verification (CHV) states; authenticating the second communication terminal and the UIM regardless of whether the UIM is in the first or the second verification states. The authenticating step may comprise determining an electronic serial number (ESN) of the second communication terminal; and comparing the ESN of the second communication terminal with an ESN of the first communication terminal.