How to authenticate user comments on Rails blogging website to prevent bots ?

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How to authenticate user comments on Rails blogging website to prevent bots ?

@raghvendra.singh

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I maintain a blog that I made with Rails. Lately I'm getting a lot of spam (bots) in comments section. How can I authenticate user comments on Rails blog?

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@anirudh.rautela

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You can try this gem -

https://github.com/markets/invisible_captcha
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