SIM application toolkit

White Paper J200

The SIM Application Toolkit (SIM AT) is a smart card-centric method of deploying programs that applies only to GSM and to SMS and USSD trans- ports. Programs must be distributed on smart cards. WAP is an Internet-centric method of deploying programs that is independent of network technology. Programs and content are kept cen- trally on web servers and downloaded as required. While there is some overlap, WAP is a particularly good choice while deploying programs that also have an HTML version for desktop use. Work is currently underway on building interfaces between the two technologies.

For an operator, a company or service provider, SIM AT offers a powerful way to deploy programs and services to users, without the need for new or upgraded equipment. All necessary setup and pro- gramming is distributed to users over the air, directly to their phones. In the J200, a separate menu is available for functions residing on the SIM card. These can include submenus for controlling functions, and also functions that allow the phone to initiate calls, send data, and display information to the user.

Digital Rights Management

Digital Rights Management (DRM) is a technology that enables secure distribution, promotion and sale of Digital Media.

The J200 includes implementation of EMS ODI (Object Distribution Indicator) limited forwarding (Sony Ericsson proprietary forward lock for EMS content).

While downloading content via WAP, the J200 includes support for OMA (Open Mobile Alliance) defined DRM solution forward lock, meaning that content is packaged in a DRM package and delivered to the device. The support of forward lock means that it is not possible to forward the downloaded content to any other device. Forward lock is useful for all types of content that the provider wants to charge for.

Related information such as the “OMA-Download- DRM, v1.0” specification can be found at www.openmobilealliance.org.

Write protection and copyright

Operators may choose to have some of the cus- tomized content in the phone write protected, so that it cannot be deleted from the phone.

There is also the option to copyright customized content in the phone, such as pictures and sounds. A copyrighted picture or sound cannot be redistrib- uted via IR or EMS, for example, and in the user interface, the “Send” option for the item is greyed out.

17	November 2004