; or (ii) advertising that is directed to a user by the operator of a website, online service, online application, or mobile application based on the search terms that the user used to arrive at such website, service, or application. (7) Third-party operator The term third-party operator means any operator of a program that appears on a website, service, or application with respect to which the operator is not a first-party operator. 3. Establishment of Do Not Track system (a) In general Not later than 6 months after the date of enactment of this Act, the Commission shall implement and enforce a Do Not Track system, including the program described in subsection (b), to protect consumers from unwanted online data harvesting and targeted advertising. (b) Do Not Track program As part of the Do Not Track system required under this section, the Commission shall designate the DNT signal and make available on the public website of the Commission a simple program that— (1) can be downloaded to any common connected device; (2) sends the DNT signal to every website, online service, or online application to which the device connects each time the device connects to such website, service, or application; and (3) permits the user of the connected device to designate websites, services, or applications to which such signal should not be sent, but does not exempt any website, service, or application from receiving such signal if it is not so designated. (c) Other do not track systems Nothing in this Act shall be construed as prohibiting the operator of any web browser or similar interface or a device designer or manufacturer from offering a program that sends the DNT signal to websites, services, or applications, provided that such program permits users to designate websites, services, or applications to which such signal should not be sent. (d) Rulemaking authority The Commission may promulgate regulations, in accordance with section 553 of title 5, United States Code, to carry out this section. 4. Requirements for operators