CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) or HIP (Human Interactive Proof). HIPs are used for many purposes, such as to reduce email and blog spam and prevent brute-force attacks on web site passwords. Most website like Gmail, Hotmail, Yahoo Mail and many other blog website’s use these HIP’S to ask their users to identity the text and in this way they distinguish between the human and spammer. Some times it’s very difficult and challenging for the user to understand these CAPTCHA.

Microsoft introduces a solution for this problem that is “ASIRRA” it means “Animal Species Image Recognition for Restricting Access”. Now users have to identify the animals like cats, dogs and some other common animals. To ASIRRS is very hard for the computer system but for humans it’s very easy.

How ASIRRA works

There are four basic steps that you have to follow to use ASIRRA in your website

• Call our JavaScript from your web form.
• Arrange for your form to validate using onsubmit().
• Write a JavaScript function that submits the form if the user is human.
• Have your back-end form processor validate that the challenge has been passed.

If you are using wordpress as blogging platform then you have just download the ASIRRA plugin activate it, insert “<?php display_asirra(); ?>” line into comments.php file inside the <form> tag.

ASIRRA is developed with a unique partnership with Petfinder.com. Petfinder is world’s largest website for finding home for homeless pets.

Source and References

• Visit Microsoft Research Website for ASIRRA
• How to use ASIRRA Details
• ASIRRA Wordpress Plugin Download
• CAPTCHA Website

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