CAPTCHA - was coined in 2000 buy carnegie Mellon university. first CAPTCHA used by yahoo
Helps us :
Preventing Comment Spam in Blogs.
Protecting Website Registration
Online Polls
Preventing Dictionary Attacks
Search Engine Bots
Worms and Spam
But
These systems make it impossible for users with certain disabilities to create accounts, write comments, or make purchases that is, CAPTCHAs fail to properly recognize users with disabilities as human.
Few toughest Captchas here..Try :-)!
5 comments:
I don't like Captcha and the one which you specified are horrible. I guess u might have work hard to find this out. Nice post.
Oh yeah ruchi its irritate me a lot at times! But we cnt afford to skip this too :-). This is your first comment in my blog. Thanks for taking your time and visiting my blog. Keep come home :-).
Extremely funny blog..with some great posts...
Keep up the good work!!
Do visit mine..(Though its not as good as yours)
Looking forward to more wonderful posts..(Following your blog)
Cheers,
D
Captcha has been a great success to avoid spamming., some sites think of over security and end up designing captchas that is tough to read ,. I believe their is a tool to crack them, may be thats the reason for this.
I personally hate Captcha..
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