Captcha is the the gold standard for Turing tests on the web: Whenever an online form wants to check if you’re a human being and not a spambot, it asks you to decipher one or two distorted words, presented as …
Luis von Ahn: Massive-scale online collaboration
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Tel Aviv U Researchers Working To Harden Captcha
A research project at Tel Aviv University is tackling the problem of making Captcha more secure. Captcha is an open source program created by a team from Carnegie Mellon University. It consists of a component that shows wavy letters on …