17 U.S. Code § 1201 – Circumvention of copyright protection systems
(a) Violations Regarding Circumvention of Technological Measures
(1)(A):
> No person shall circumvent a technological measure that effectively controls access to a work protected under this title.
(1)(B):
> The prohibition contained in subparagraph (A) shall take effect at the end of the 2-year period beginning on the date of the enactment of this chapter.
(2) Trafficking in Circumvention Tools
> No person shall manufacture, import, offer to the public, provide, or otherwise traffic in any technology, product, service, device, component, or part thereof, that—
(A) is primarily designed or produced for the purpose of circumventing a technological measure that effectively controls access to a work protected under this title;
(B) has only limited commercially significant purpose or use other than to circumvent a technological measure that effectively controls access to a work protected under this title; or
(C) is marketed by that person or another acting in concert with that person with that person's knowledge for use in circumventing a technological measure that effectively controls access to a work protected under this title.
(3) Definitions and Application
(A): As used in this subsection—
a technological measure "effectively controls access to a work" if the measure, in the ordinary course of its operation, requires the application of information, or a process or a treatment, with the authority of the copyright owner, to gain access to the work.