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Alternative to captcha

Discussion in 'HTML & Website Design' started by phononlattice, Mar 27, 2011.

  1. #1
    Can anyone suggest me an alternative to captcha? I need the code too.
    I dont want recaptchas. Some thing like 2 + 3 would do where numbers change frequently. Cannot find it on google, please help.
    SEMrush
     
    phononlattice, Mar 27, 2011 IP
    SEMrush
  2. rain21

    rain21 Active Member

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    #2
    if you use wordpress, there is a plugin you can install, after that who submit a reply need to check a box only, its more easier to readers.
     
    rain21, Mar 27, 2011 IP
  3. phononlattice

    phononlattice Peon

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    #3
    No, I am not using wordpress here.
     
    phononlattice, Mar 27, 2011 IP
  4. xira

    xira Active Member

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    #4
    Considering that captcha is an acronym (Completely Automated Public Turing test to tell Computers and Humans Apart), are you specifically against using a specific company's software? Or you do not want humans to prove themselves before sending a form?
     
    xira, Mar 28, 2011 IP
  5. phononlattice

    phononlattice Peon

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    #5
    no no, i m not against anyone. I dont want to use the letters or numbers captcha as it is very difficult to read :)
     
    phononlattice, Mar 28, 2011 IP
  6. hdewantara

    hdewantara Well-Known Member

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    #6
    Interesting....
    Have you considered to build your own? I haven't tried it though, but perhaps a simple CAPTCHA system could be built involving a few technologies:
    1. Matching a user saved session UID to unique answer of the equation.
    2. PHP's GD library
    3. Ajax (additional).
     
    hdewantara, Mar 29, 2011 IP
  7. lokers

    lokers Peon

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    #7
    it's a very simple php code, from the top of my head I would do something like this:
    1) when printing the form (at the bottom / after the form)
    <?php
    $no1 = rand (1,9);
    $no2 = rand (1,9);
    $sum = $no1 + $no2;
    $_SESSION['captcha'] = $sum;
    ?>

    2) at the top where the validation goes:
    <?php
    if (isset($_POST)) {
    if ($_POST['captcha'] == $_SESSION['captcha']) {
    // your rest of code here
    }
    else {
    // print validation error here
    }
    }
    ?>
     
    lokers, Mar 29, 2011 IP
  8. hdewantara

    hdewantara Well-Known Member

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    #8
    hdewantara, Mar 29, 2011 IP
  9. idiotboy

    idiotboy Greenhorn

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    #9
    Check Mollom
     
    idiotboy, Mar 29, 2011 IP
  10. deepspeed

    deepspeed Greenhorn

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    #10
    Mollom works well..
     
    deepspeed, Mar 30, 2011 IP