Title: [Plugin: Conditional CAPTCHA for WordPress] reCAPTCHA didn’t work perfectly
Last modified: August 19, 2016

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# [Plugin: Conditional CAPTCHA for WordPress] reCAPTCHA didn’t work perfectly

 *  Resolved [sndsfnd](https://wordpress.org/support/users/sndsfnd/)
 * (@sndsfnd)
 * [15 years, 12 months ago](https://wordpress.org/support/topic/plugin-conditional-captcha-for-wordpress-recaptcha-didnt-work-perfectly/)
 * hi,
 * i like your idea on this plugin, and it works on my blog. what bothering me is,
   sometimes the recaptcha didn’t work perfectly. i’m trying to put false word (
   change/missing the some letter) but the comment could be approved.
    i don’t it
   is who is responsible, it recapthca or plugin maker. thank you for your attention.
 * regards,
    sandi
 * [http://wordpress.org/extend/plugins/wp-conditional-captcha/](http://wordpress.org/extend/plugins/wp-conditional-captcha/)

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Samir Shah](https://wordpress.org/support/users/solarissmoke/)
 * (@solarissmoke)
 * [15 years, 12 months ago](https://wordpress.org/support/topic/plugin-conditional-captcha-for-wordpress-recaptcha-didnt-work-perfectly/#post-1559991)
 * Hi sandi,
 * This behaviour is caused by reCAPTCHA.
 * reCAPTCHA uses scanned images from books to generate CAPTCHAs (more info [here](http://recaptcha.net/learnmore.html)).
   The way it decides if a response is correct is to check it against other previous
   responses to the same CAPTCHA (because the system doesn’t know what the true 
   correct answer is). To account for this, reCAPTCHA has some margin for error 
   built into the check – so if you get one or two letters wrong but the rest right,
   you will probably pass.
 * You can try this for yourself on the official demo page (same link as above) –
   get a couple of letters wrong and it will still say you are correct.
 * If you want to have only one possible correct solution to CAPTCHAs, you are better
   off using the default text-based option.
 *  Thread Starter [sndsfnd](https://wordpress.org/support/users/sndsfnd/)
 * (@sndsfnd)
 * [15 years, 12 months ago](https://wordpress.org/support/topic/plugin-conditional-captcha-for-wordpress-recaptcha-didnt-work-perfectly/#post-1560036)
 * Hi solarissmoke,
 * Thank you for your info. I really likes your plugin, it makes easy blog reader
   to leave a comment without fear of spam. Thanks!
 *  [udegbunamchuks](https://wordpress.org/support/users/strictlyonlinebiz/)
 * (@strictlyonlinebiz)
 * [15 years, 10 months ago](https://wordpress.org/support/topic/plugin-conditional-captcha-for-wordpress-recaptcha-didnt-work-perfectly/#post-1560212)
 * I just tried reCAPTCHA and three spammy comments came through @ once unlike when
   i was using default text based option thus I’m switching back to the default 
   text-based option.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘[Plugin: Conditional CAPTCHA for WordPress] reCAPTCHA didn’t work perfectly’
is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/wp-conditional-captcha_008000.svg)
 * [Conditional CAPTCHA](https://wordpress.org/plugins/wp-conditional-captcha/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-conditional-captcha/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-conditional-captcha/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-conditional-captcha/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-conditional-captcha/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-conditional-captcha/reviews/)

 * 3 replies
 * 3 participants
 * Last reply from: [udegbunamchuks](https://wordpress.org/support/users/strictlyonlinebiz/)
 * Last activity: [15 years, 10 months ago](https://wordpress.org/support/topic/plugin-conditional-captcha-for-wordpress-recaptcha-didnt-work-perfectly/#post-1560212)
 * Status: resolved