4 ms·
> the actual question (what is the purpose of CAPTCHA) This assessment isn't quite right. The actual question is about how the captcha differentiates between a
by ebg13 8y ago
> the actual question (what is the purpose of CAPTCHA)
This assessment isn't quite right. The actual question is about how the captcha differentiates between a human and a bot at the box checking stage.
You're right, though, that it is both full of filler and also doesn't address the question as posed at all.
> Why can’t a bot tick the 'I'm not a robot' box?
It can, by taking over the mouse...except...
LUCKILY, the top answer (on my screen at least it's https://www.quora.com/Why-can-t-a-bot-tick-the-Im-not-a-robot-box/answer/Girish-Mallenahally https://www.quora.com/Why-can-t-a-bot-tick-the-Im-not-a-robo...) does actually try to answer the question.
I feel like the OP submission might have just been some sort of submarine self-promotion for the "CEO of <redacted>".
- thatoneuser 8y agoThat answer talks about mouse movements. Most captchas I do these days are mobile. So I don't trust this as a very solid answer.
- ebg13 8y agoMobile device movement variability (IMU, compass, soft vs hard press, and so on) and mouse movement variability are relatively analogous, and both can be measured and analyzed in very similar ways. It also links to a patent describing a novel mobile captcha invented by the author, so they might have some knowledge about the domain.