The U.S. Court of Appeals for the Third Circuit has reaffirmed its August decision reviving an online shopper’s claims that two companies violated Pennsylvania’s anti-wiretapping law by using a third-party marketing service to track her activities on a website.

According to the Oct. 18 opinion, plaintiff Ashley Popa used her iPhone to browse the website for Harriet Carter Gifts and added a set of pet stairs to her cart. Popa left the site without purchasing the stairs. But, without her knowledge, another company called NaviStone tracked her activities on the site.