One of the many strange and problematic features of modern copyright law is the DMCA anti-circumvention exception system, wherein the Librarian of Congress makes unilateral decisions about what you can and can't do with software and products that include DRM and other protections. This week we're joined by Kyle Wiens, CEO of iFixit and a long-time champion of the right to repair and tinker, to discuss the ins and outs of this system, and what is (or isn't) coming in the next round of exemptions.