This is DRM. I actually think that DRM has its place, it's just inaccessible to the people that need it. Imagine if you could employ these techniques when shari

This is DRM. I actually think that DRM has its place, it's just inaccessible to the people that need it. Imagine if you could employ these techniques when sharing secrets with a friend? Intimate photos? Wouldn't you want to be able to trace the provenance of a leak?