User manual
Smartphone User Manual
9. System
Maintenance
178
Smartphone User Manual
9. System
Maintenance
179
How File Manager handles DRM
DRM is Digital Rights Management, a method of controlling the us-
age of protected media objects after they have been downloaded.
Some digital media les, such as songs downloaded from online
stores, are encrypted to prevent the les from being unlawfully dis-
tributed or shared. Content providers use the DRM technology to
encrypt these les when applicable. During the encryption process,
the content provider creates a license which species how and when
the le can be used. Files that have licenses associated with them
are called protected les. More information about DRM (Forward-
Lock, Combined Delivery, Separate Delivery, etc.) was provided in
“How Album Handles DRM” in Chapter 3.
The previous gure of File Manager’s List View showed non-DRM
les. The gure below is a sample listing of DRM les. Similar to
the Album application explained in Chapter 3, “key” icons are used
to denote DRM les.
DRM les that can be used are identied by a key icon (with no line).
DRM les that are invalid (cannot be viewed or played because
license has expired or been used) are indicated by a key icon with
a diagonal line running through it.