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A CAPTCHA (an acronym for "Completely Automated Public Turing test to tell Computers .... equation and requiring the user to enter the solution as verification.

Problems viewing or passing CAPTCHA verification - Yahoo Help


Learn what CAPTCHA is, and why Yahoo uses it to verify you're human.

The Official CAPTCHA Site


Includes demonstrations, research papers, and news.

Captcha Verification - Qualtrics


Introduction. Captcha verification is a common web technique to ensure that your visitors are real humans, and not a program written to spam your survey.

What exactly is a CAPTCHA? How does it work? | Dictionary.com Blog


Oct 11, 2011 ... Websites use CAPTCHAs to keep spammers from posting on their sites. ... verification anymore and all is happy without the sad captcha tripe.

Why this CAPTCHA? - the Google Help Center


Accessibility; This CAPTCHA is too hard; My computer is sending automated .... reCAPTCHA checkbox checked after successfully completing a verification ...

reCAPTCHA: Easy on Humans, Hard on Bots - Google


The new reCAPTCHA is here. A significant number of your users can now attest they are human without having to solve a CAPTCHA. Instead with just a single ...

The system always shows the error of "CAPTCHA verification failed ...


Nov 19, 2011 ... Question. The system always shows the error of "CAPTCHA verification failed" while the code is right. What is the problem? Solution. First of all ...

Form doesn't accept the captcha code. What to do?| 123ContactForm


In some browsers, the captcha code (verification number) is not accepted, even though it's typed in correctly. Follow our guide to fix this problem.

Captcha script for web forms - SnapHost.com


Captcha script. Free and paid HTML code for Captcha form-to-email scripts. Web forms with anti-spam protection, ready to be copied-and-pasted to your site.

Popular Q&A
Q: What is the CAPTCHA verification?
A: CAPTCHA is that funny looking character string that you are asked to enter into the box. The plan is, it's not readable by a machine, so only a human can get pa... Read More »
Source: answers.yahoo.com
Q: How to remove CAPTCHA verification?
A: Its not possible to remove the captcha window from yahoo mail. Read More »
Source: answers.yahoo.com
Q: Simple javascript CAPTCHA verification code.
A: LOL ! Rookie to JavaScripting? Its as simple as this: All the best. <script type=text/javascript" var a = Math.ceil(Math.random( * 10) var b = Math.ceil(Math.ra... Read More »
Source: www.experts-exchange.com
Q: How to build a registration process using CAPTCHA verification co...
A: Certified registration data are of vital importance to be sure that the data you are receiving is coming from an actual human being. Simply adding in your regis... Read More »
Source: www.codeproject.com
Q: How can I change it so it uses the CAPTCHA verification code and ...
A: LOL ! Rookie to JavaScripting? Its as simple as this: All the best. 1:2:3:4:5:6:7:8:9:10:11:12:13:14:15:16:17:18:19:20:21:22:23:24: <script type="text/javascrip... Read More »
Source: www.experts-exchange.com