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Captcha alternative - El Forum - 01-05-2012

I am looking for a captcha alternative.

Do you think showing the user a random set of colors and having them enter the name of the colors would work?

I.e. I would have 5 boxes with a small square of color above each box and the user has to type the word of the corresponding color to verify that they are human.

Captcha alternative - El Forum - 03-01-2012

As per the latest news by TeleSign unfortunately, authentication solutions such as passwords, CAPTCHA and tokens have been shown to be vulnerable to attack. For stronger authentication Telephone Verification has proven to be the best alternative to CAPTCHA. To read more about telephone authentication system and alternative to CAPTCHAs visit .