This isn't newsworthy. There are hundreds of ways to use the browser's built-in API for fingerprinting purposes. It's actually overkill because you only need a

This isn't newsworthy. There are hundreds of ways to use the browser's built-in API for fingerprinting purposes. It's actually overkill because you only need a handful and a decent statistical model derived from device testing. Any big company with ad revenue has their own research and proprietary methods to catch fraudulent ads and TOS violators. It's been happening for years, and as long as browsers "improve", it will continue.