The Digital Millennium Copyright makes it illegal to “circumvent” digital rights management schemes. But when Congress passed the DMCA in 1998, it gave the Librarian of Congress the power to grant exemptions. The latest batch of exemptions, which will be in force for three years, were announced on Thursday. Between now and late 2015, there will be five categories of circumvention that will be allowed under the Librarian’s rules, one fewer than the current batch of exemptions, which was announced in July 2010. The new exemptions take effect October 28. Read the full story at ARS Technica.