the protection and consumption of digital content and associated usage rights on an SRM. An SRM is a removable medium that implements means to protect against unauthorized access to its internal data, such as a secure memory card or smart card. The SRM Work Item does not stand alone; it extends the existing OMA DRM 2.0 specifications. While OMA DRM 2.0 defines a general framework for downloading Rights to devices and sharing Rights in a domain, the SRM Work Item defines mechanisms and protocols for the SRM. It extends OMA DRM version 2.0 or 2.1, allowing users to move Rights between devices and SRMs, and to consume Rights stored in SRMs without generating and managing complex groups of devices in a domain. OMA SRM 1.1 Started in December 2008 and approved in June 2011, SRM 1.1 is an extension of SRM 1.0 introducing such functions as content license move between two SRMs, direct license provisioning to SRM and support for OMA Broadcasting (OMA BCAST) tokens. Latter allows to turn SRM into a secure electronic wallet capable to store credits that are used to subscribe to mobile broadcast and multicast services. OMA SCE 1.0 OMA SCE 1.0 started in September 2005 and was approved in December 2008 as a Candidate enabler. The goal of Secure Content Exchange (SCE) is to extend OMA DRM v2.0, enabling seamless sharing of purchased content between multiple devices, including all the devices owned by a subscriber (phone, PC, home electronics system, car audio system, etc.) and the temporary sharing of content on any device that is in close proximity to the subscriber’s device (e.g., a television set at a friend’s house or in a hotel room while the user is travelling). Because there will be no single DRM system deployed across all these different devices, the SCE also enhances the interoperability between OMA and non-OMA DRM systems, by defining an Import function for OMA DRM. Implementations and usage OMA DRM 1.0 has been implemented in over 550 models of mobile phone. Many mobile operators use OMA DRM for their content services. The first OMA DRM 2.0 implementations were released in early 2005; implementations were installed on mobile phones by the end of 2005. Software implementations for personal computer and PDA clients are also available. Most of the ringtones pre-installed on mobile phones have implemented DRM. Many commercial ringtone vendors who are not part of any mobile