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How can I avoid spam for a non-authenticated user. Is there functionality like CAPTCHA that limits entry of data by a robot?

April 26, 2017avoid captcha Data functionality limits Robot spam user

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How can I avoid spam for a non-authenticated user. Is there functionality like CAPTCHA that limits entry of data by a robot?

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It’s very easy to incorporate CAPTCHA as part of your application. You would need to incude a simple javascript in your visualforce page, and the validation logic in your visualforce page controller.