I have noticed this. You get words for a while, once you get a good enough score you go to house numbers, if you fail a house number you go back to the words. P

I have noticed this. You get words for a while, once you get a good enough score you go to house numbers, if you fail a house number you go back to the words. Playing with the demo of it if you fail the checkbox (letting it time out is one way) they throw you back to the house number again[1]. As other people have pointed out, what they're promoting here has been used on the Humble Bundle website for a while now, I guess it's the next logical step to show "good" enough users no captcha at all. Not sure about the privacy implications of that though. [1]: https://i.imgur.com/EnydTJs.png https://i.imgur.com/EnydTJs.png