What is the best Captcha plugin for registration? [closed]

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I’m suffering from the issue of lots of fake registrations for my site.
I’d like to add a captcha for registrations. What is the best plugin that
will require a captcha at registration? Recommendations based on real installs are most appriciated!

Also: I’m using the most up-to-date install of WP.

7 s
7

My favorite captcha plugin is reCaptcha. The captcha images are scans from old, damaged books. A computer identifies possibilities with OCR, then the user, in correctly filling out the captcha, confirms it. It helps digitize whole books this way.

It’s an initiative by Google. Read about them on their website.

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