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  1. #26
    Programming Since 1978 silver trophybronze trophy felgall's Avatar
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    Quote Originally Posted by ErinCatriona View Post
    Now there are many software available which can read captcha.
    What software can read an unobtrusive CAPTCHA such as a timer test? There is nothing for the software to read with unobtrusive CAPTCHAs.
    Stephen J Chapman

    javascriptexample.net, Book Reviews, follow me on Twitter
    HTML Help, CSS Help, JavaScript Help, PHP/mySQL Help, blog
    <input name="html5" type="text" required pattern="^$">

  2. #27
    SitePoint Wizard Stomme poes's Avatar
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    Karl Groves released an article about CAPTCHA-less security for anyone interested.

  3. #28
    Programming Since 1978 silver trophybronze trophy felgall's Avatar
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    Quote Originally Posted by Stomme poes View Post
    Karl Groves released an article about CAPTCHA-less security for anyone interested.
    A number of things that are wrong in that article:

    1. It is not necessary to filter, validate and escape all input. It is only necessary to validate or filter input.Any form input should be validated. Any user input that has been validated does not need to be filtered. Escaping is an output function that should never be performed on input.
    2. A honeypot is a CAPTCHA, it is not an alternative to CAPTCHA.
    3. A confirmation email is a CAPTCHA, it is not an alternative to CAPTCHA.
    4. The temporary token method described is a CAPTCHA.
    5. Confirmation screens and SMS are also CAPTCHAs.

    None of what that page describes is CAPTCHA less. All of the techniques used are image less CAPTCHAs.
    Stephen J Chapman

    javascriptexample.net, Book Reviews, follow me on Twitter
    HTML Help, CSS Help, JavaScript Help, PHP/mySQL Help, blog
    <input name="html5" type="text" required pattern="^$">


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