3 ms·

My brain is unwilling to accept this. What is the purpose of those choices then?

• rum3 7y ago
  Since they introduced the square-selecting captchas I have always assumed that they use it for identifying the user. I bet that depending on how you solve the captchas they can identify who you are if their system already has a theory of who you might be.
  • kmlx 7y ago
    they're there for denying access to automated scripts.
    • pawelk 7y ago
      This is the reason they exist in the first place, but doesn't answer the question why they're implemented this particular way.
      • faceplanted 7y ago
        They're implemented this particular way to provide training data for image segmentation systems, they move the image around inside the frame which allows them to use a few people doing the challenge to create a boundary representation that can be used to train things like YOLO style ML systems