Comments for The Cutest Human-Test: KittenAuth

Ridiculously cute. I love it. If it was accessible I'd be all over this. :)

Another idea is to have a 3x3 grid of numbers and tell the user to click on the numbers that sum up to 30. Or multiply out to 328. Or are all prime numbers.

This is the best idea I've ever seen. If I was a robot I'd be totally confused right now.

i really like how much thought you have put into this. i also like the suggestions and naysayers comments. most of them are repeats however and simply miss the fundamental reason for your concept. to make it easier on us, not to make it harder for bots. there was a really good comment "why ALWAYS 3 kittens in a 9-celled grid?". if you could somehow deviate from the mean 3 kittens every pageload, then this would help secure the site from bots.

the idea does not seem too professional-looking, but maybe smaller pictures would make it look less novel. i hope you get some people to help you make it better, i love it.

blind people should design their own internet where all the sites have embedded audio scripting. html and most browsers are more of visual-based anyways. if blind people care, they will design something completely different, even if it means less information. i am american and cannot read japanese, therefore i'm restricted to english sites. blind people are restricted to vision-impaired sites. deal with it.

Sweet.
Another possible enhancement would be to have pictures with different numbers of kittens [dogs, penguins, ...] and ask the user to select the [insertnumberhere] kittens [dogs, penguins].

In that case it is not clear for a robert how many kittens are there on the image, while it should be relatively easy to find the images that show 4 kittens together for a human.

Of course there is still the possibility to hash each image and manually register them within a database. But then again, if this is combined with creating several combined images beforehand, of which ones each is only used once, it should make it quite hard for a robot, unless there are unique reference pixels that can be easily be used (or, for that matter reference image parts). So I guess getting new image contents on a regular basis would be required, hello to Google Images ;-)

Go. Go. Go!
- Robert

Why not have images that are all feline but the user has to destinguish which are adult cats and which are young kittens. This would be extremely tricky for a machine to do but very easy for a human. Or how about people pick

Nice CAPTCHA. I agree with many people, it might be necessary to dynamically resize or otherwise slightly alter images to prevent checksumming. Otherwise, cool. One way to extend it would be to give it hundreds of images of different things, and tell the user "please click on a kitten, a truck, and a pencil". That would make it harder to be hacked.

Few suggestions:
1.make the system alter image checksum each time they are generated(by altering dozen of random pixels,while streaming).
2.Make more images. and categories.
Choose 3 penguins from (9000 random images).Or choose 3 Hondas.
3.Get random strings from huge precomposed
random binary files,(like random.org provide.) Don't calculate random value at runtime.pick them from files.
4.Make a funtrion that slightly alters the images,invisible but colors get shifted abit,some parts blurred/brightened.see 5.
5.Use cached pipeline of images,served/generated depending on load.I.e. generate 1000 images when idle (each,2Kb would take only 2mb ram)
6.Used gif images only.(for bandwidth).Use moderate compression(to preserve quality).

i propose adding a layer of complexity through another dimension to the choices, to make the 1/84 chance even harder to hack (assuming you had some sort of post attempt limiter like the Digg Genie, or something worse that banned IP ranges or something)

randomly select which cute furry animal has to be selected in each 9X9 grid. pick 3 mini horses this time, next time pick three baby penguins. then, pick three dogs, or bears, or hedgehogs or racoons or whatever. also, throw in some shiny objects (pick three magic eight balls, pick three machetes, pick three three-prong plugs, pick three car wheels, etc etc) lots of classes. i'll drop a (C)copyright 2006 rhettnye.org on that one.

the only big issue I see is that already there are spam graphic designers making pop ups that look exactly the same as your little cute matrix.

yeah not an original thought i guess i just posted too fast.

But what about htis one, i didn't notice this in the comments yet: you could say 'highlight with right, left or double left or double right clicks, 3(or 2 or 4 or 5) kittens (or rabbits, etc)