If blocking the domain grants access to the material, somewhat like a door that opens when no key is presented, it would seem unclear how this is an "effective[

If blocking the domain grants access to the material, somewhat like a door that opens when no key is presented, it would seem unclear how this is an "effective[]" technological control. Also, the DMCA (Section 1201(i)) permits blocking of effective technological controls that are capable of collecting or disseminating personally identifying information about the online activities of a person. Admiral does not address this, and looking at the details it seems perhaps the issue would be the rationale for the blocking (privacy or a mixed purpose).