If you are using CAPTCHA on your web­sites, watch this video. It’s an eye open­er.

Now if you are won­der­ing what are the alter­na­tives, I sug­gest you to read this W3C Work­ing Group Note: Inac­ces­si­bil­i­ty of CAPTCHA – Alter­na­tives to Visu­al Tur­ing Tests on the Web . This note is pret­ty detailed and will guide you what is the best alter­na­tive.

I per­son­al­ly find ask­ing log­i­cal ques­tions (e.g. Is fire hot or cold?) pret­ty help­ful. Make sure that you add a check­box with the ques­tion that requires peo­ple to check or uncheck the ques­tion before they sub­mit a form. This com­bi­na­tion has worked pret­ty well in my per­son­al projects.

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