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Date: Wed, 13 Aug 2014 15:44:00 -0400
Subject: Re: Captcha identify
From: Joel Goldstick <joel.goldstick@gmail.com>
To: Chris Kaynor <ckaynor@zindagigames.com>
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On Wed, Aug 13, 2014 at 3:24 PM, Chris Kaynor <ckaynor@zindagigames.com> wrote:
> On Wed, Aug 13, 2014 at 4:39 AM, Eric S. Johansson <esj@harvee.org> wrote:
>>
>> eliminate captchas, 35+million disabled people would thank you as would
>> many more millions of the not-yet-disabled like your future self.
>
>
> And so would the spammers, which is who captchas are trying to block.
>
> For ease-of-use, most sites only require captchas to be entered once upon
> creating the account. Some might also require additional captcha entries
> when the account is suspected of spamming. This is ultimately a trade-off of
> blocking spammers and allowing accessibility.
>
> Many of the better captchas also include options for an audio cue in
> addition to the default visual one.
>
> Chris
>
> --
> https://mail.python.org/mailman/listinfo/python-list
>
I wrote a sample form page with a simple math problem to solve -- 2 or
3 random small integers to add and put the result in a form field

def produce_expression():
    """
    return a tuple: expression (str), answer (int)
    """
    num_terms = random.randint(2,3)
    operands = []
    while num_terms:
        n = random.randint(1,21)
        operands.append(n)
        num_terms -= 1

    result = sum(operands)
    string_operands = map(str, operands)
    expression = " + ".join(string_operands)
    return expression, result

Its not as annoying as captcha and I think it would work with audio
browsers.  Never tested
-- 
Joel Goldstick
http://joelgoldstick.com