What Is CAPTCHA ?, I Am Not A Robot?, Spam & AI.

WHY YOU NEED, TO READ IT?

     When you visit to a website or make account on Google or any other website, You have fill to this type of Captcha.

1. Why websites show you captcha?
2. Is it really works?

CAPTCHA :- 

Full-Form Of Captcha-
   Completely
   Automated
   Public
   Turing test to tell
   Computers and
   Humans
   Apart.

    Captcha is designed in 2003, to stop spaming with the help of bots ( AI ) and script.
     (because, they can destroy any website and its database by registering multiple account on website and G-mail account.)
This technology is designed, to find that, you are a robot or a human.

How It works-

     While making any account, websites shows you some letters (a, b, c....).
     Which can be understand by humans easily. The success rate of human in any captcha is 80% .
   But, for computers it is only 0.01%.
It is almost impossible for a computers to solve a captcha.

Concept Of Re-Captcha :-

     A company come in market, to improve captcha, and named it re-captcha.
   Google also face this problem of spaming in its search engine & G-mail accounts. To solve this problem, In 2009, Google buy Re-captcha company, So, in 2009 Re-captcha is sold to Google and
   Google wants to improve captcha.
Because,
1. Sometime it is very difficult for peoples to fill it.
2. It wastes our time also.
     So,  Google introduced a new  captcha,
Which is called  No-Captcha or Re-Captcha.

No-Captcha :-

     Now a days, you can see these type of captchas on Google.you have to tick only on I'M NOT A ROBOT

      If you see a green tick mark their, you will pass this level.
     Now a question can come in your mind.
Robots and Script can also click there.
But,
     When you click there, a lot of information ( your IP address, Country & City location and your courser & scrolling movement on that page) goes from your device to the Google sever.
     With the help of Artificial Intelligence (AI), they can easily check from your behaviour that you are a robot or a human.
     If Google found your behaviour 95% of a man,  then you will automatically proceed to the next level.
     If Google found your behaviour l5-10% of a robot, they will stop you and show you images and ask you to point a Bus, Traffic light etc.
     If you pass this level, next time you can easily login to any website from your device.

    So,  a new captcha is formed,  in which you don't have to do anything except
Only follow their instructions.


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