7 Innovative Solutions to CAPTCHA User Attention

Among the many solutions that Web workers have devised to improve security measures, as well as the user experience on their sites, is the CAPTCHA (or Completely Automated Public Turing test to tell Computers and Humans Apart), a solution that presents a challenge response test to users that ensures the “person” trying to access the site is actually a human, and not just an annoying spam bot.

Unfortunately, while these solutions can be useful in theory, they are often more problematic when they’re actually implemented. Not only can they be cumbersome, difficult to read and a generally unwanted hassle for users, but they’re not even foolproof, as bots can use optical character recognition (OCR) software to crack the CAPTCHA code.

As a result, developers have had to get creative with their CAPTCHAs, resulting in an improved experience for many users. This post presents seven of the more interesting, innovative and just plain useful CAPTCHA solutions available today.

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