File with a .DCF extension contains multimedia data, sounds, videos or images, encoded with the DRM – Digital Rights Managements. In this way, files are protected against copying or modifying and their read can be performed only via supporting devices.

DCF files are utilised by cell phones, for instance in order to store sounds of rings reserved or protected by copyrights. They are similar to DF files, but the copyrights necessary to open them are stored in a separate file.