An approach for providing services to an open platform implementing Subscriber Identity Module (SIM) capabilities without the need for a discrete, physical SIM device. For one aspect, a protected communications channel is established with a computing system, the computing system providing SIM Authentication,...http://www.google.de/patents/US20050108534?utm_source=gb-gplus-sharePatent US20050108534 - Providing services to an open platform implementing subscriber identity module (SIM) capabilities