I want to know the answer to the following question:
What are child safety and public library software used to filter?
All the background I'm provided with is that "Title I of the U.S. DMCA, the WIPO Copyright and Performances and Phonograms Treaties Implementation Act has provisions that prevent persons from "circumvent[ing] a technological measure that effectively controls access to a work".". Is that enough to answer the question?
Answer: no