One week ago today, Google disabled tracking cookies for 30 million Chrome users, amounting to just 1% of the 3 billion people who use the internet’s most popular browser. By the end of the year, Google will block these cookies entirely and replace them with a new tracking system that’s a bit more private called “Privacy Sandbox.” That will spell the death of cookies across the web, ushering in one of the biggest changes in the history of the internet. It’s early days for the project, but one co...