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Re: Completed Captcha action item 264

From: Ramón Corominas <rcorominas@technosite.es>
Date: Wed, 30 Jul 2014 15:08:06 +0200
Message-ID: <53D8EE36.6070004@technosite.es>
To: joshue.oconnor@cfit.ie
CC: kunzhang@w3.org, David MacDonald <david100@sympatico.ca>, WCAG <w3c-wai-gl@w3.org>
Hello all,

I'm not sure that we can call this an "alternative" to CAPTCHAs. I don't 
think its main purpose is to "tell computers and humans apart", but to 
collect private data that might be used later for other purposes. Indeed 
it has severe privacy implications, and anyway it relies on the user 
having a mobile phone, which may not be the case.

Of course, the above issues affect all users, so we may consider this 
method to be "accessible", but I would not consider it a valid method to 
replace an otherwsie inaccessible CAPTCHA, which IMO is the definition 
of "alternative". If you completely suppress the CAPTCHA then the new 
method you use is simply a different thing.


Joshue replied:

> Thanks for that Kenny, very useful info and an interesting alternative 
> to CAPTCHAs.
 > Kenny wrote:
>> Some of B2C Websites ask for the user to input mobile number (usually
>> the mobile number also need to confirm when user do initial
>> registration) when they pay money or make a deal, the system send a text
>> message with a code to user's mobile device, user input the sending code
>> to website just confirming he/she is really user also a human.
>> The blind people just have a mobile with TTS, they are able to use this
>> kind of Captcha, it is a accessible for people with disabilities, the
>> problem is, sometimes this method is limited by mobile phone signal, it
>> is hard to receive text message in anytime and anywhere.
 >> David wrote:
>>> I had an action item to set up a wiki page for Captcha, and populate
>>> it with Kathy's review. I've added some of my findings also,,. That
>>> action 264 is now complete... anyone is welcome to edit it.
>>> https://www.w3.org/WAI/GL/wiki/Captcha_Alternatives_and_thoughts.
>>> http://tinyurl.com/kruqrau
>>> I left the action item until it's been reviewed...
Received on Wednesday, 30 July 2014 13:09:18 UTC

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