Hi…I want to share the captcha control usage and How to get and use the control…
CAPTCHA terms for Completely Automated Public Turing Test To Tell Computers and Humans Apart
Now google has provides own captch a control, if you have an website you can easily get free captch control from the following links…
signup using google account and get the dll file and coding for your site…
After sign up you have to register your domain and they will provide public key and private key for your site.Those keys you have to add when using captcha control..
Then You can get three type of file from Download…
Recaptcha.dll
Recaptcha.dll.refresh
Recaptcha.pdb
Instead of using some other captcha the google captcha give more security and easy to integrate to your website……
CAPTCHAs have several applications for practical security..
Preventing Comment Spam in Blogs
Protecting Website Registration
Preventing Dictionary Attacks
Search Engine Bots
Worms and Spam.
I hope this one helpful to all
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