New publication or document type

Publication year: 2011

URL: https://www.researchgate.net/profile/Luigi-Lo-Iacono/publication/265243768

Abstract: 

A CAPTCHA is a procedure that aims at giving access to humans, but blocking automated scripts. They are widely deployed as a method of preventing spam. The term CAPTCHA (for Completely Automated Public Turing Test To Tell Computers and Humans Apart) was coined in 2000 by von Ahn, Blum, Hopper and Langford of CMU [CAPTCHA, AB+ 03]

Harvard Citation style: Lo Iacono, L. and Sorge, C., (2011). Interactive CAPTCHAs: Step forward or backward?. https://www.researchgate.net/profile/Luigi-Lo-Iacono/publication/265243768

APA Citation style: Lo Iacono, L., & Sorge, C. (2011). Interactive CAPTCHAs: Step forward or backward?. https://www.researchgate.net/profile/Luigi-Lo-Iacono/publication/265243768