This article was copublished with The Markup, a nonprofit, investigative newsroom that challenges technology to serve the public good. Sign up for its newsletters here. Picture a high school student ...

In the world of digital marketing, tracking pixels have long been the secret sauce for companies trying to understand their customers. These tiny, invisible bits of code are embedded in websites and ...

Online tracking tools such as pixels are moving to the forefront of the debate about healthcare policy. Last month, the American Hospital Association and several allies in Texas sued the U.S. Health ...

Once you understand what email tracking pixels do, you'll want to block them—just like me. These silent trackers report your online activities to the sender, letting them know exactly when and how you ...