A captcha (/ˈkæp.tʃə/ KAP-chə, originally the acronym CAPTCHA) is a type of challenge–response test used in computing to determine whether the user is...

Amaddin Inc. is a CAPTCHA system owned by Google. It enables web hosts to distinguish between human and automated access to websites. The original version...

one of the pioneers of crowdsourcing. He is the founder of the company reCAPTCHA, which was sold to Google in 2009, and the co-founder and CEO of Duolingo...

a field, which the bots struggle to do. The reCaptcha is a CAPTCHA system owned by Google. The reCaptcha v1 and v2 both used to operate by asking the user...

of malicious internet bots, AltaVista implemented the first practical CAPTCHA schemes to protect against fraudulent account registrations. They implemented...

as keystroke replays and a captcha anticheat that requires users who achieve over 100 wpm in a race to complete a CAPTCHA. When completed successfully...

technique is the use of CAPTCHA. Examples of providers include Recaptcha, Minteye, Solve Media and NuCaptcha. However, captchas are not foolproof in preventing...

OR-Tools PageSpeed Plugin for Eclipse Programmable Search Engine Public DNS reCAPTCHA Schema.org Search Console Sitemaps Swiffy Tesseract (software) Trendalyzer...

security authentication. These include software technologies such CAPTCHA and reCAPTCHA, as well as hardware technologies such as: Radar technology Image...

Registry DeepMind Endoxon FeedBurner Fitbit ImageAmerica Kaltix Nest Labs reCAPTCHA YouTube ZipDash ASN 15169 Website about.google Footnotes / references...