Captcha Idea Proposal for GSOC 2014 - Mediawiki-i18n

28 Feb 2014

Hello,
I am interested in&nbsp;Multilingual, usable and effective captchas project listed
in&nbsp;https://www.mediawiki.org/wiki/Summer_of_Code_2014 and figured out few
solutions to encounter the solution
Way we can approach the project:
1)Alphabetical order captcha:We can use Html5's drag and drop Api to list a particular
Set of images into one category .for example in the example mentoined in the
demo&nbsp;here&nbsp;,i made a collection of diff words starting with letters A,B,C
....as an output i grouped up words with starting letter A diff from words with starting
letter B,C....As,i used text in this example we can use images of diff animals such as
cat's and dog.....and by drag and drop we can group images of cat and that of dog in
diff categories.
2)Annotation captcha:We can use&nbsp;Images With annotations&nbsp;from commons
determine the subcategoriy the annotations belongs to and then give relevant options to
the users ;for example in the file we can search from names of different annotations to
which they corresponds to from wikipedia(names given here are those of mountain) and then
give the the option's much relevant to the image.
3)Effect captcha:We can use image as a question which are changed by the effect produced
php's gd library and the use the same file with another effect and then ask user to
match the two files.....for example:the&nbsp;image1&nbsp;can be used as a question
asking user to click on the image that matches with the question image and as an answer we
can give this&nbsp;spiral image&nbsp;of the original image.Similarly we can give
filters to different images producing different options asking user for right answer.
4)Direct captcha:We can ask to user direct questions like ask for selecting cat out of
options consisting of images of cats and humans.....an example by pginer demonstrate
this&nbsp;example
5)Ask User to click on given effect: Asking user to click on images consisting of spiral
effect's out of options which consist of images with spiral and other
effects(example:grey scale).
6)Drag and Drop character in Correct Place: We can use drag and drop api of html5 to ask
user to form an particular alphabet or no out of the pieces of character provided .Here is
an&nbsp;example&nbsp;to form an character "A" and an digit "8"
out of the same pieces of character.
This drag and drop capability can be further enhance to form a particular shapes.For
example form a clip art from a particular set of piece of shapes....for example the image
given here inserts the correct nose as asked in the in the questions out of the possible
options provided.
Most,Importantly i think creation of an index system would be fruitful since it would rank
the inappropriate images on the basis of users response (rank is negative for an image if
user needs to reload a captcha) to a provided captcha.This as the time passes will provide
us with relevant images which are user friendly and equivalently secure to use.......
In addition i sincerely appreciate a point mentioned by Gmansi of creation of jigsaw
puzzle for the images but in my view point there will be listing of some particular
category of images and those ranked higher in indexing system to be used as jigsaw
puzzle.
As an additonal help we can use&nbsp;Extension Assira&nbsp;to make our extension
smarter.
I request all members to please give your valuable suggestions as we can work to improve
this amazing project. &nbsp;at
&nbsp;https://www.mediawiki.org/wiki/Talk:CAPTCHA&nbsp;&nbsp;:)
&nbsp;Thank YouAalekh Nigam"aalekhN"