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this reminds me of another alternative to captchas i'd seen, something like kitten captcha or something.. the premise being, you had a 3x3 grid of thumbnails o
by foxhill 15y ago
this reminds me of another alternative to captchas i'd seen, something like kitten captcha or something..
the premise being, you had a 3x3 grid of thumbnails of animals, and you'd have to pick out of them, which were kittens.
less invasive captchas are something that i'd really like to see on sites, but despite the alternatives (of which i'm sure there are many) they never seem to take off..
- rorrr 15y agoKitten captcha is stupid, because you only have to classify kitten images once (manually, mechanical turk), and then it will be broken 100% of the time.
- josscrowcroft 15y agoTotally agree.
- owenmarshall 15y agoThe "kitten CAPTCHA" could then take countermeasures: 1. Apply transforms to the images. This would require spam bots to perform much harder processing. 2. Use a larger pool of images -- after all, this is the Internet, a communication medium used primarily to exchange pictures of kittens. Of course the spammers would adapt. But CAPTCHAs are not one-shot solutions. A good CAPTCHA works well enough to defeat most bots, and is updated once most bots start defeating it.
- reso 15y agoThe Cat/Dog captcha was broken because dogs are very likely to be photographed on grass while cats are not. An attack that simply calculated the amount of green in the image broke the captcha to a very high accuracy.