Explaining how DRM works

 There are many descriptions online of how DRM (digital restrictions
management) work, but few images actually try to picture a real life
scenario. These images have been modeled after a simple scenario
described in the Digital Media Project, the people that is trying to
develop an interoperable DRM. I have used the use case n. 8 (Personal Photo) from the Approved Document No. 4 β€”
Technical Specification: Use Cases and Value Chains
to help Fellows explain why Free Software is incompatible with DRM, no matter what others say.

Get the file from here and let me know what you think, if it is correct and how to improve it.