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A CAPTCHA ( / ˈkæp.tʃə / KAP-chə) is a type of challenge–response test used in computing to determine whether the user is human in order to deter bot attacks and spam. [1] The term was coined in 2003 by Luis von Ahn, Manuel Blum, Nicholas J. Hopper, and John Langford. [2]
HTML form. A webform, web form or HTML form on a web page allows a user to enter data that is sent to a server for processing. Forms can resemble paper or database forms because web users fill out the forms using checkboxes, radio buttons, or text fields.
reCAPTCHA Inc. [1] is a CAPTCHA system owned by Google. It enables web hosts to distinguish between human and automated access to websites. The original version asked users to decipher hard-to-read text or match images. Version 2 also asked users to decipher text or match images if the analysis of cookies and canvas rendering suggested the page ...
A contact page is a common web page on a website for visitors to contact the organization or individual providing the website. [1] The page contains one or more of the following items: In the case of large organizations, the contact page may provide information for several offices (headquarters, field offices, etc.) and departments (customer ...
Formmail and its many variants, is a free open source web server CGI script that captures and processes form contents and then typically e-mails them to one or more recipients. The script, originally created in Perl, was originally written in early 1993 by Reuven M. Lerner, as part of his work on The Tech, and was included in the archive of CGI ...
en.wikipedia.org
Challenge–response authentication. In computer security, challenge-response authentication is a family of protocols in which one party presents a question ("challenge") and another party must provide a valid answer ("response") to be authenticated. [1]
The present all-caps styling (CAPTCHA) is perfectly fine, and probably would be considered preferred by most people. But I just wanted to point out, purely as FYI, that c/lc styling (Captcha) can be logically defended as explained at wikt:Category:Acronyms. If you read through the whole page, it gives a nice overview of the epistemology of ...