I have noticed that some CAPTCHA pages, like Cloudflare's, simply ask you to check a box to proceed. There is no clicking on traffic lights or entering characters. How does clicking on a check box tell them I am not a robot?

you are viewing a single comment's thread
view the rest of the comments
[–] 8 points 2 years ago (1 child)

I have two guesses:

  1. Low bar just checks that it gets clicked.
  2. Script on the pages watches mouse movements, etc., and bases its decision on that data.
  • source
  • hideshow 2 child comments
  • [–] 6 points 2 years ago (1 child)

    I'm pretty sure it's just number 2.

    A program will click the box and hit submit instantly. Or it'd move in a perfectly straight line to either the centre of each or the edge of each and click as quickly as possible.

    Real human movements are not as precise.

  • source
  • parent
  • hideshow 2 child comments
  • [–] 1 point 2 years ago (1 child)

    Unless you are really good with a mouse .

  • source
  • parent
  • hideshow 2 child comments
  • [–] 1 point 2 years ago (1 child)

    Remember, it's not about filtering out robots, it's about filtering out dangerous (as in spam, malware, etc.) things.

    I mean, If you're reeeeeeally good and reeeeeeally precise and reeeeally fast .. then maybe you're as dangerous as the robot. Maybe it's just safer to keep you out. 🙃

  • source
  • parent
  • hideshow 2 child comments