![]() ![]() ![]() New: Learn Spanish, German or French for free while This was the first example of a CAPTCHA based on image recognition. Letters, you authenticate yourself as a humanīy recognizing what object is common in a set of images. A CAPTCHA script that's close to our hearts. The words shown come directly from old books that are being digitized. Stop spam and help digitize books at the same time! reCAPTCHA is our officially recommendedĬAPTCHA implementation. reCAPTCHA also comes with an audio test to ensure that blind users can freely navigate your site. Easy to install plugins and controls areĮnvironments. Get a Free CAPTCHA ForĪ free, secure and accessible CAPTCHA implementation is available from the reCAPTCHA project. Nicholas Hopper and John Langford of Carnegie Mellon University. The term CAPTCHA (for Completely Automated Public Turing Test To Tell Computers and Humans Apart) wasĬoined in 2000 by Luis von Ahn, Manuel Blum, For example, humans can read distorted text as the one shown below, but current computer programs can't: CAPTCHA: Telling Humans and Computers Apart AutomaticallyĪ CAPTCHA is a program that protects websites against bots by generating and grading tests that humans can pass butĬurrent computer programs cannot. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |