CAPTCHA

名词 n.
中文释义

英文释义

名词 n.
  1. A computerized test requiring the human user to perform a task deemed to be difficult to automate, such as entering a displayed series of distorted characters or describing images, to demonstrate that they are a human and not a computer program. Internet
    — CAPTCHA puzzles are intended to be easy for a human to solve but difficult for a computer. Because of the monetary value to spammers of circumventing these controls, an arms race has occurred in which typical CAPTCHA puzzles have […]

词形变化

CAPTCHAs plural captcha alternative Captcha alternative

词源

Coined by a team of researchers at Carnegie Mellon University in 2000 as a loose acronym of “completely automated public Turing test to tell computers and humans apart”.
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