HOW DOES RECAPTCHA WORKS

   Here in this article you will be able to see how to use reCAPTCHA in a proper manner and it helps the user to make good security for their websites. Mainly the people does not know the use of reCAPTCHA and they unnecessarily avoids it and their websites or blogs will be hacked or attacked in minutes.

Introduction

reCAPTCHA is free service which helps to digitize newspapers, books, tv shows etc. CAPTCHA is a program which tells that whether the user is a human or a computer. When we get into different pages approximately of registration forms we can see that at the bottom there will be colourful images with text. Most of the websites use CAPTCHA as a tool for protecting from spamming. The computer will not be able to read text, but humans can read the text so the people will not be able to hack into sites which is having CAPTCHA. Daily around 200 millions CAPTCHA are solved by human beings and in ten seconds we are spending our time and these type of puzzles will take around 15 lacs hours to complete the work. reCAPTCHA does exactly the same by giving some effort to solve CAPTCHA as online reading books.

Why human beings are not making positive effort of CAPTCHA's?

For making the knowledge of humans into an accessible section, we are making projects from different areas by digitizing books which were written before computer age. The pages of book are scanned and then converted into a technique known as Optical Character Recognition. Converting into a text is really useful, so that we will get images which are stored in books and which are difficult to store in devices, taking effort to download and which cannot be searched properly. OCR technique is not proper to use every time.
reCAPTCHA uses the books in a proper way, thus digitizing books by sending words which cannot be read by computers in web and it will be in the form of CAPTCHA's and human beings can read the text in a proper manner. Each word cannot be read by OCR and it will be placed on a image and it will be used as a CAPTCHA. Most of the OCR programs will give you an alert on the words which cannot be read properly . The word which cannot be read by the OCR will be given to a user in different styles and conjunction with other words and answer will be known. User will be prompted to read both word and if the user can solve it, then system shows that answer is a correct one. System will then give it to other people to test whether original answer is correct or not.
When we are running a website and it is having any problems which are related to spam, then you can put the 6yhbeyu7eumreCAPTCHA on your site. For word press applications and mediawiki applications, there are some plugins which allows to use reCAPTCHA without writing any code. For common web applications such as PHP, there are many easy to write codes for giving best solutions for your life.
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Security

reCAPTCHA is having good security installed in a proper manner and when compared to other CAPTCHA's they use some improper texts which can be attacked by a hacker in an easy manner. Most of other image comparing programs like 'MAPTCHA' are easily attacked in an easy style. reCAPTCHA uses 2 layers to protect the user by making good images. Normally the computer will not be able to read this image and it gives suggestions to users and they will make proper point.

How exactly the reCAPTCHA works?

They will first start to scan a book having many words. Then they will extract word which will not be able to ready by the OCR technique and the words are shown as improper texts and this mainly depends upon the author or the book or quality of scanning mechanism. To make good security they are then providing with some lines or wrapping mechanisms, so that it cannot be read in an easy manner. Mainly the CAPTCHA is taken from the book having two words which is having distorted texts.