HTML submit form using a CAPCHA image or a security question which one is more secure?

Posted by Roland on Stack Overflow See other posts from Stack Overflow or by Roland
Published on 2010-05-13T08:45:53Z Indexed on 2010/05/13 8:54 UTC
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I've seen developers use various methods to prevent spam on a basic html contact form

Method 1 is where the developer uses a Captcha image and Method 2 where only a Question is asked eg. Are you Human? with a radio button.

Which one is the better one to use and why?

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