On June 4 I gave a workshop at the ABC Copyright Conference titled Access vs. Copyright: Technological measures, Paracopyright, and copyright. I made my slides available and on June 17'th made an informal recording for YouTube based on the same slides. Links to both, and to media made of other talks, have now been added to the program.
Summary: I gave a brief history of TPMs being added to copyright law, then described the two narratives for discussing TPMs: 2-constituency involving copyright holders and users (and a magical incantation on content), and 4-constituency including copyright holders, users, software authors and hardware owners.
Since "digital locks" (technological measures) are often applied to both content and devices, I suggested people compare how the law and various people protect or disrespect the relevant rights-holders. Each of copyright and technology property rights have primary and secondary infringers, and who is committing these infringements are quite different.