2 Sides of INDIAN Cyber Law or IT Act of INDIA
C...: 2 Sides of INDIAN Cyber Law or IT Act of INDIA Cyber laws are meant to set the definite pattern, some rules and guidelines that defin...
May 13, 2012
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.
WEBSITE THAT CHANGED THE WORLD
Wikipedia
Date started- 15/1/2001.
Founder- Jimmy Wallace, Larry Sanger.
Languages- 240.
Wikipedia is one site that provides every information under the sun on anything. Once you search for anything on the internet using a search engine the first link you come across is that of Wikipedia. There were a number of online encyclopedias before Wikipedia but all of them had only limited information and they were not user friendly. But all that changed ever since Wikipedia came. This site is the number one information providing site on the internet. This site can be accessed by anyone anywhere. The number of people using and contributing at this site is increasing day by day. This site is not only in English, but supports 240 languages worldwide today.
Date started- 4/2/2004.
Founder- Mark Zuckerberg.
Face is the most famous social networking website today. In the USA this site even more popular than Google. The number of users who have Facebook profiles run into millions. There are people who are addicted 24 hours on this site! However Facebook was not the first social networking site. Facebook has changed the way people are interacting with the world today. There are a number of third party applications which can be added to Facebook enhancing its charm. Facebook is popular because it has been changing with times.
Date started- 2006
Founder- Evan Williams, Jack Dorsey and Biz Stone.
Twitter users range from a common citizens, politicians, rich men, poor men etc. In just 140 words you can be connected to the world. One can connect to celebrities, Politicians and famous people using this site and they respond. This was unthinkable years back. Twitter has blurred the lines between the so called 'high class' and 'low class'. Now famous people want to connect to the local people using twitter. Information on any issue or topic spreads like wildfire on twitter. Twitter has become a part of life today.
You tube
Date stared- February 2005.
Founder- Chad Harley, Jawed Karim and and Steve Chen.
You tube has changed the norms of entertainment. Before this site there was no other online video sharing site on the internet at such a large scale. When You-tube started, India was facing low bandwidth and people thought that this site would not become popular because of this problem. People were reluctant to upload videos in India at that time, being limited by bandwidth. But Indian ISPs provide very good bandwidth today and You tube has reached popularity levels. Today even large videos can be uploaded in a short amount of time and people can watch their favorite clips on You tube.
Date started- 4/9/1998.
Founder- Sergey Brin and Larry Page.
Every person knows what Google is, the name is enough. There is hardly an internet user who does not know what Google is. Google means 'search'. No matter what you do on the internet, chances are that you may be visiting this search engine at least once a day. Even those who do not use Google frequently tend to use the services offered by Google like Gmail, reader, blog-spot, Picassa, You tube and Orkut.
Amazon
Date started- 1994.
Founder- Jeffrey P Bezos.
Amazon is an online purchasing site. You can purchase a commodity of your choice online by logging onto this site. Payment is made by credit card. The product is delivered to your home. Amazon has changed the way people shop today. An increasing number of people are using this site for purchasing stuff online. Now there are a number of online shopping sites but Amazon is the most famous of them all.
Hotmail
Date started- 4/7/1996.
Founder- Shabeer Bhatia and other Microsoft members.
Today youngsters and new internet users may not be much familiar with Hotmail. But hotmail was perhaps the first company offering free email services to users years ago. Initially email services were not free and even the free email accounts offered by hotmail were not easy to get. Hotmail started the revolutionary webmail based email service and made email easy to use, making it possible to access email from any computer. Microsoftsubsequently purchased hotmail in 1996. Now hotmail has been replaced by Microsoft live mail. Hotmail still brings about nostalgia in some.
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