It's not really clear how it'd prevent bots... > The difficulty of the puzzle, and therefore the time and resources needed to solve it, is intelligently and au

It's not really clear how it'd prevent bots... > The difficulty of the puzzle, and therefore the time and resources needed to solve it, is intelligently and automatically scaled based on sophisticated risk signals to protect against advanced bots. Friendly Captcha is completely invisible and require no manual user challenge at all. So... magic?