[Mediawiki-i18n] Captcha Idea Proposal for GSOC 2014

[Aalekh Nigam]

>From our last communication about Multilingual, usable and effective captchas, we discussed one of the point that :
3)For blind and visually impaired users:We can use and audio captcha system which ask user to select the number as it is asked in the audio .For example the visual equivalent of the audio asked by the user will be :https://commons.wikimedia.org/wiki/File:Proposal11correction.png .Now when audio asked user to select number "0" our user will use arrow key to move across different blocks like a slide show....with different voice speaking out the options and pressing enter will select the word spoken....hence verifying that the user is human.....although the above shown image is visual equivalent the actual image visible will be:https://commons.wikimedia.org/wiki/File%3AProposal4correction.png ;....to make the captcha reload we can user to by pressing key "r" which will be instructed in the audio while the captcha starts playing.
and got an reply that:
3)  Please  note  that  most  of  the  blind users can't press R whileplaying  audio.  Screen  readers provide a so-called virtual cursor onweb  pages,  and  the  keys  are  reserved for quick navigation (H forheading, L for list, R for region or radio button).
we should repeat the audio for two times....pause for 5 seconds then give a new captcha to the user this can help us with bot attacks we can reserve a key lets say "a"  for the users to be able change the captcha if the sound is not audibleto the users.....also i came across an interesting idea in this mentoined here :http://webinsight.cs.washington.edu/projects/audiocaptchas/   .... i strongly believe the solution i suggested here can produce ease for our user.........Please give your suggestions on this.
and also do take part in our captcha talk page here:https://www.mediawiki.org/wiki/Talk:CAPTCHA
:)
Thank YouAalekh NigamaalekhNhttps://www.mediawiki.org/wiki/User:AalekhN
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