I'm not talking about the simple puzzles or 'words' that reCaptcha initially used to show. I'm talking about their 'improved' way of testing whether you are a b

I'm not talking about the simple puzzles or 'words' that reCaptcha initially used to show. I'm talking about their 'improved' way of testing whether you are a bot by just making you click a checkbox. That doesn't work anymore (most of the times).