In DRM you only have a sender and an attacker, who is also the recipient. DRM relies on the attacker/recipient only gaining access to the cleartext while their machine is in the grips of non-user-accessible code that restricts what they can do with the cleartext (in particular, DRM seeks to ensure that the cleartext can’t be saved back to the drive while still in the clear).

If you have an open source DRM “client” or “player,” then how can it keep users from modifying it to allow the saving and manipulation of the conditionally rendered cleartexts?

There has never, ever been a DRM implementation that was intended to be user-modifiable. There can’t be. It’s like trying to make “dry water” or “hot ice.” DRM is supposed to keep users from manipulating their players. Open source is supposed to encourage users to manipulate and modify their players. They are utterly incompatible.

But what I am going to ask is about the single reason he provided as to how DRM could be useful (outside of paranoid entertainment industry execs):

Having a content rights system that allows a doctor in ER to securely review your electronic health record is essential.

How can this not be just done with regular crypto? Why must DRM be involved? What is the doctor going to do with your records that DRM could prevent (you know, if it was possible).

The purpose of openEyes is to provide a hardware design and a set of software tools useful for the analysis of eye movement data. The development of openEyes stems from the recognition in the eye tracking and human computer interaction communities that while the cost of hardware for eye tracking has precipitously dropped in the recent past that the there is lack of freely available software to implement even long-established eye-tracking methods. The tools available for this platform include algorithms to measure eye movements from digital videos, techniques to calibrate the eye tracking system, and example software to facilitate real-time eye-tracking application development.

Link. Thanks Phillip.