Surely if the work being protected isn't copyrighted, there's nothing to circumvent in terms of the DMCA?
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Here, let's read together: https://www.law.cornell.edu/uscode/text/17/1201
> No person shall circumvent a technological measure that effectively controls access to a work protected under this title
> protected under this title
A work not protected under title 17, copyright, is thus not covered.
Surely if the work being protected isn't copyrighted, there's nothing to circumvent in terms of the DMCA?