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&nb…
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