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completely automated public turing test to tell computers from humans apart (Captcha)

Captcha is the term used to describe problems that cannot be solved by computers and even supercomputers with artificial intelligence

(AI), although they appear to be relatively simple for the human brain.With a corresponding test, the captcha test, a computer determines whether its communication partner is a human or another computer. For this purpose, it confronts its counterpart with a problem that a computer, according to the current state of development, cannot solve or cannot solve in a reasonable time. The tasks to

be solved are problems for which a human brain provides solutions. These are simple logical tasks with visual and acoustic perceptions.

Captcha by Microsoft Phishing Filter

Captcha by Microsoft Phishing Filter

The goal of the captcha is to clearly distinguish between humans and computers. They should be recognized by humans without problems and not be solved by computers. Thus, all electronic methods of font and text recognition, such as optical character recognition (OCR), are to be invalidated so that they cannot be used for automatic generation of spam

. Captchas are often characters that run into each other or overlap each other.

Distorting characters, using colors, lines and shapes are also used to prevent computers from interpreting these characters. Other approaches use picture puzzles, requiring recognition of a particular animal or plant. Still others pose simple math problems. The purpose of all these captcha is to keep spammers and hackers away from websites that would have to interpret captcha first.

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Englisch: completely automated public turing test to tell computers from humans apart - Captcha
Updated at: 18.08.2017
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