About Captchas - CaptchaMaker
What is Captcha
Captcha is response test that will identify wheather or not if the user is human. Captch is an acronym that stands for "Completely Automated Public Turing test to tell Computers and Humans Apart". What Captch does is it requires the user to type a distinct amount of letters or numbers from a distored image that appears on the screen. When this field is completed correctly it tells the administrator that the field was completed by a human and not a computer. Humans are abel to read distored text, but computer programs and bots can not. They are used when you want to stop a bot from automatically completing a process such as signig up for an account or submitting comments on a blog.
What is Captcha used for
Captchas are used for several security purposes.
- Protecting website registration
- Prevent email addresses from scrappers
- Search engine bots
- Preventing Spam and Worms
- Account registration
Some cool things that you are able to do with captcha is include your companys logo, and change the colors that are shown to match your existing web site, as well as use different pictures and animation of your preference.
Here are some different types of captcha security checks that are used.