Audio CAPTCHA

CAPTCHAs (Completely Automated Public Turing test to tell Computers and Humans Apart) as the name suggests are used to differentiate automated computer programs or bots from humans. CAPTCHAs are used for various purposes such as preventing automated account creation on websites, prevention of traffic flooding on websites and spam-protection etc., but CAPTCHAs deny access to visually impaired humans as well. Most visually impaired people use narration softwares, so visual CAPTCHAs deny access to those considering them as bots. Audio CAPTCHAs help the visually impaired people pass the test, though they possess major challenge as bots may pass such a CAPTCHA by voice to text translation. Hence, some trivial or lingual techniques need to be employed in order to make them effective against bots but easy to crack for humans.

Me along with my team-mates approached National Student Symposium, part of IEEE tech-fest Fervour'08 at Bhartiya VidyaPeeth College of Engineering(BVCOE) with this topic of ours. The event was Technical Poster Presentation. We were ale to score 2nd rank out of 31. You can have a look at my poster in my orkut profile.
http://www.orkut.com/AlbumZoom.aspx?uid=3164082510346742246&pid=1202236926539&aid=1202211527

The basic plus points of this topic are:
1. Almost every user of internet has been through a CAPTCHA, but very few know about it. So this is something people have passed but do not know why they even had to encounter the same.
2. You can make your judges sentimental by adding a SOCIAL ISSUE along.
3. Quite easy to implement and has a lot of available literature.


I'll be putting up many more project ideas here as soon as my classmates start working on them!