I\'ve been testing out Selenium with Chromedriver and I noticed that some pages can detect that you\'re using Selenium even though there\'s no automation at all. Even when I
Even if you are sending all the right data (e.g. Selenium doesn't show up as an extension, you have a reasonable resolution/bit-depth, &c), there are a number of services and tools which profile visitor behaviour to determine whether the actor is a user or an automated system.
For example, visiting a site then immediately going to perform some action by moving the mouse directly to the relevant button, in less than a second, is something no user would actually do.
It might also be useful as a debugging tool to use a site such as https://panopticlick.eff.org/ to check how unique your browser is; it'll also help you verify whether there are any specific parameters that indicate you're running in Selenium.