what is captcha

[Seymour]

The term CAPTCHA ---- Completely Automated Turing Test To Tell Computers and Humans Apart , for preventing spammers..

A CAPTCHA is a program that can generate and grade tests that humans can pass but current computer programs cannot.It Tells Humans and Computers Apart Automatically.. It is used to prevent Dictionary Attacks , Worms and Spam and etc..

[jack_kallis]

First u must see the third party who is providing the captcha.. but it will decrease the rank of your site so u must prepare it your self. you can contact me on shelp99@yahoo.com i will send u php code that how it works and how it can be embeded into ur site.

[diagurzula]

CAPTCHA is a program that protects websites against bots by generating and grading tests that humans can pass but current computer programs cannot. For example, humans can read distorted text as the one shown below, but current computer programs can't: The term CAPTCHA (for Completely Automated Public Turing Test To Tell Computers and Humans Apart) was coined in 2000 by Luis von Ahn, Manuel Blum, Nicholas Hopper and John Langford of Carnegie Mellon University.

[martinez7990]

In a CAPTCHA test (an acronym for "Completely Automated Public Turing test to tell Computers and Humans Apart," also sometimes spelled in lowercase), an image of letters is dynamically generated. The letters, because they're part of an image and not text (e.g. text that you could cut and paste), are difficult for a spambot or other computer program to read. Yet, a person has little trouble reading the letters in a captcha image.
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B&B Ballina

[oldgamesware]

How about trying to google the free captcha in the net? Maybe there is one available that is reliable.

[hernandez9039]

A CAPTCHA or Captcha is a type of challenge-response test used in computing to ensure that the response is not generated by a computer. ...
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Web Design London

[Mark Hussy]

Hello Guys,

Captcha is dynamically generated random images and you can get free scripts for it.
Visit w3schols.com

Thanks
Mark.

[anna]

Captcha is a Completely Automated Public Turing test to tell Computers and Human Apart.

[davidemarsh01]

Captcha is an image verification module that is used to verify whether or not someone is a real person. If you have signed up for an email address before, then you have probably seen a Captcha box before. It is a strange looking image with oddly shaped characters in it, also it is very difficult for a program to decipher the image content. The Captcha box prompts the user to enter in the information sen in the image to verify that the user is indeed a genuine human being.

[pwsslick]

Hello

Captcha is an emige verification test to insure that the response is not a computer generated.This is used to prevent SPAM messages,on how to implement a catpcha on your site I sugest to hire for a web programmer !

[williambell1985]

I support Oracle for the definition of captcha.
It stop automated computer spam robots from filling out forms , harvesting email addresses, and then sending out countless spam emails.

[Scstrade123]

By the CAPTCHA visitor can stay more the 30 seconds on your website and it is very good for you and your website Ranking.

[llisyspa67]

Hello friends
Captcha is something which was created to stop automated computer spam robots from filling out form.
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Fine Wine Investment

[pamelahike1985]

Captcha is randomly generated image of letter by which it stops automated computer spam robots from filling out forms and harvesting email addresses.

[jesila]

Hi,
CAPTCHA is a method to stop the or to protect the spammers.



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