If you want to produce a cheap AI for solving a particular class of problems, turn the class of problems into a CAPTCHA...
TextCAPTCHA: 180 million simple logic questions
61–66 of 66 posts
Re: TextCAPTCHA: 180 million simple logic questions
#62I would be interested to see what the completion rate for this is versus, e.g., the Yahoo captcha. My intuition is "not that great." (You require reading on the Internet... uh oh.) By the way, picking one token from the captcha and returning it beats the captcha 7% of the time, if the examples are representative. Spammer wins, since he can generate requests by the hundreds of thousands.
I also noticed that certain questions aren't necessarily 'easy'. > The 1st number from 25, eight, 6, six and 27 is? So is the answer 25 or 6? I've come to the realization that CAPTCHAs aren't the solution, or at least can't be a standalone solution. Make the CAPTCHA easy enough for a human to not be blocked (pick the cat from these 3 photos) and the bot still wins 33% of the time. Make it hard enough that the user ha…
I agree completely! I suspect the solution to the CAPTCHA paradox will be something we haven't even considered. In fact, I don't think we can even solve it directly- we have to approach the problem from a different angle. For example, we can start requiring significant identity authorization on some high quality sites (sacrificing anonymity for responsibility), and rely on advanced filtering for the rest.
Think about it: the actual problem with spammers defeating CAPTCHAs is low quality content. I'd much prefer to expend energy trying to stop low quality content, which is often delivered by non-spammers :)
I wrote a blog post expanding on these ideas: http://cmurphycode.posterous.com/the-problem-with-captcha
Re: TextCAPTCHA: 180 million simple logic questions
#63Earlier quoted context omitted.
I've often wanted my own text-based CAPTCHA for a video game website I run. I'd ask things like "What is the name of the purple weapon?" or "How many shields do you start with?" People who actually play the game could nail questions like that, while bots would be up a creek.
What if one of your fans created a simple bot specifically designed to answer your admittedly easy questions?
Then he would be a douchebag... and probably a huge moron, too.
Who creates a bot specifically to overcome the CAPTCHA on a forum for a 15 year old video game with very little traffic? We're not really a significant target; I only have to ban about one spambot per week. There's a tremendously low ROI from spambots on our forum, I can't imagine it'd be worth anyone's time to even attempt to incorporate it into their CAPTCHA-breaking bot.
Re: TextCAPTCHA: 180 million simple logic questions
#64If you want to produce a cheap AI for solving a particular class of problems, turn the class of problems into a CAPTCHA...
I bet you can make this work for image tagging
Re: TextCAPTCHA: 180 million simple logic questions
#65I would be interested to see what the completion rate for this is versus, e.g., the Yahoo captcha. My intuition is "not that great." (You require reading on the Internet... uh oh.) By the way, picking one token from the captcha and returning it beats the captcha 7% of the time, if the examples are representative. Spammer wins, since he can generate requests by the hundreds of thousands.
I haven't been to Yahoo in a few years, but when I registered a mail account there once, it took me at least 10 if not 15 tries to get the captcha right. I came dangerously close to blowing my stack.
Re: TextCAPTCHA: 180 million simple logic questions
#66I would be interested to see what the completion rate for this is versus, e.g., the Yahoo captcha. My intuition is "not that great." (You require reading on the Internet... uh oh.) By the way, picking one token from the captcha and returning it beats the captcha 7% of the time, if the examples are representative. Spammer wins, since he can generate requests by the hundreds of thousands.
Not to mention that most modern captchas are being solved by people in third world countries, not bots.
Something like ReCaptcha is already for all intents and purposes bot-proof. A text captcha like this looks like a step backward.