Comment by mherrmann

Their Mariner tool for controlling the browser sounds scary and exciting. At the moment, it's an extension, which means JavaScript. Some web sites block automation that happens this way, and developers resort to tools such as Selenium. These use the Chrome DevTools API to automate the browser. It's better, but can still be distinguished from normal use with very technical details. I wonder if Google, who still own Chrome, will give extensions better APIs for automation that can not be distinguished from normal use.