![]() ![]() It takes the average person approximately 10 seconds to solve a typical CAPTCHA. Many websites use it to prevent bot spamming and raiding. Because the test is administered by a computer, in contrast to the standard Turing test that is administered by a human, a CAPTCHA is sometimes described as a reverse Turing test. This form of CAPTCHA requires entering a sequence of letters or numbers in a distorted image. The most common type of CAPTCHA (displayed as Version 1.0 ) was first invented in 1997 by two groups working in parallel. The term was coined in 2003 by Luis von Ahn, Manuel Blum, Nicholas J. tʃ ə/ KAP-chə, a contrived acronym for "Completely Automated Public Turing test to tell Computers and Humans Apart" ) is a type of challenge–response test used in computing to determine whether the user is human. This CAPTCHA (Version 1 ) of "smwm" obscures its message from computer interpretation by twisting the letters and adding a slight background color gradient.Ī CAPTCHA ( / ˈ k æ p. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |