Negative Captcha
A plugin to make the process of creating a negative captcha in Rails much less painful
- Free • Open Source
- Self-Hosted
What is Negative Captcha?
A negative captcha has the exact same purpose as your run-of-the-mill image captcha: To keep bots from submitting forms. Image ("positive") captchas do this by implementing a step which only humans can do, but bots cannot: read jumbled characters from an image. But this is bad. It creates usability problems, it hurts conversion rates, and it confuses the shit out of lots of people. Why not do it the other way around? Negative captchas create a form that has tasks that only bots can perform, but humans cannot. This has the exact same effect, with (anecdotally) a much lower false positive identification rate when compared with positive captchas. All of this comes without making humans go through any extra trouble to submit the form. It really is win-win.
The last update is from 2018.
Negative Captcha Screenshots
Negative Captcha Features
Negative Captcha information
- Developed byErik Peterson
- LicensingOpen Source (MIT) and Free product.
- Written in
- RatingAverage rating of 5
- Alternatives12 alternatives listed
Supported Languages
- English
GitHub repository
- 793 Stars
- 79 Forks
- 14 Open Issues
- Updated
Comments and Reviews
Tags
- Anti-spam
- rails
Recent user activities on Negative Captcha
- Evi1M4chine_ replied to a comment / review on Negative CaptchaEv
Its a different approach than Googles, detects bots and seems to be unbreakable, due to the fields being only recognized by humans and security keys being used.
- Evi1M4chine_ reviewed Negative CaptchaEv
It’s innovative, breaks out of the box, and is user-friendly.
- Evi1M4chine_ liked Negative CaptchaEv
It’s innovative, breaks out of the box, and is user-friendly.
Its a different approach than Googles, detects bots and seems to be unbreakable, due to the fields being only recognized by humans and security keys being used.
It can theoretically be broken by analyzing the DOM, according to the author. But it’s much more theoretical than normal CAPTCHAS, which are an arms race that is inherently doomed to fail. And also much easier to improve. I already came up with several solutions that would make this not even an arms race anymore, but be inherently impossible for a machine.
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