Cardea (DRM)
Encyclopedia
Cardea is the codename for portable version of Windows Media DRM
Windows Media DRM
Windows Media DRM is a Digital Rights Management service for the Windows Media platform. It is designed to provide delivery of audio and/or video content over an IP network to a PC or other playback device in such a way that the distributor can control how that content is used.WMDRM includes the...

 for network devices, whose marketing name is Windows Media DRM for Network Devices (or in short form WMDRM-ND) introduced by Microsoft
Microsoft
Microsoft Corporation is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions...

. It is used for streaming protected digital media across a network for immediate playback.

Janus (DRM)
Janus (DRM)
Janus is the codename for portable version of Windows Media DRM for portable devices, whose marketing name is Windows Media DRM for Portable Devices introduced by Microsoft in 2004 for use on portable media devices which store and access content offline. Napster To Go was the first online music...

 is a similar system for portable
Portable
Portable may refer to:* Portable building, a manufactured structure that is built off site and moved in upon completion of site and utility work...

 devices, but is used for synchronization.
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