CAPTCHA. 6.3.1 If any Completely Automated Public Turing Test to Tell Computers and Humans Apart or similar visual or textual Turing or reverse-Turing verification test (referred herein as “CAPTCHA”) is used on xxx.xxxxxxx.xxx, Staples will incorporate alternative security measures that are usable by Persons with Visual Impairments.
CAPTCHA. If the Contractor is hosting the website, the Contractor is accountable for the security of each webform that is on the site, whether the Contractor has personally implemented the webform or not. The Contractor shall ensure that “Completely Automated Public Turing test to tell Computers and Humans Apart” (CAPTCHA) is properly implemented on each form as required to prohibit House email from being overwhelmed with spam or bots. In accordance with Item 26 of The United States House of Representatives Technical Standard – Web Site Developers (7.12.1), the Contractor should implement a CAPTCHA solution to protect webform submissions. It is encouraged that the Contractor implement CAPTCHA in a way that is compatible with mobile devices.
CAPTCHA. Completely Automated Public Turing test to tell Computers and Humans Apart, a technique used by a computer to tell if it is interacting with a human or another computer.
CAPTCHA. If any Completely Automated Public Turing Test to Tell Computers and Humans Apart or similar visual or textual Turing or reverse-Turing verification test (referred to herein as “CAPTCHA”) is used on any WellPoint Websites, WellPoint will incorporate alternative security measures that are usable by Persons with Visual Impairments.
CAPTCHA. Recent research on CAPTCHA techniques [2] suggests that CAPTCHA has many practical applications, e.g., sites such as Yahoo Mail and Hotmail use dis- torted image recognition to prevent automated account registration; online polls; search engine bots. CAPTCHA technique has also been deployed in combating spam and worms and preventing dictionary attacks [13]. Although distorted im- age recognition is most widely used, CAPTCHA means more than this – it is a test (any test) that can be automatically generated. Such tests generated are trivial to human but computationally hard for computer programs. Ahn et al. [2] studied two kinds of artificial intelligence (AI) problems and proposed several methods to construct CAPTCHA. However, we should note that the security of these AI problems, the foundation of the CAPTCHA, is based on the state of the art in pattern recognisation, and thus, heuristic. Several researchers have recently developed efficient methods to defeat some specific CAPTCHA. Despite this setback, CAPTCHA is still very popular.
