Security Level

A right has been added that enables you to specify the minimum security level of the Windows Media Format on which a player application must be based in order to use a packaged file.
All player applications that support packaged files have a component that is based on the Windows Media Format. Enhancements have been made to the Windows Media Format, including signature verification for codec's. In addition, only those players based on Windows Media Format 7.1 or later can interpret some of the more advanced security features described in this document. In order to take advantage of the latest security features, you can use this security level right to limit content playback to only those applications that have a minimum security level corresponding to Windows Media Format 7.1 or later.