Verification of a human in the loop or Identification via the Turing Test (1996)
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BibTeX
@MISC{Naor96verificationof,
author = {Moni Naor},
title = {Verification of a human in the loop or Identification via the Turing Test},
year = {1996}
}
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Abstract
We propose using a "Turing Test" in order to verify that a human is the one making a query to a service over the web. Thus, before a request is processed the user should answer as a challenge an instance of a problem chosen so that it is easy for humans to solve but the best known programs fail on a non-negligible fraction of the instances. We discuss several scenarios where such tests are desired and several potential sources for problems instances. We also dicuss the application of this idea for combatting junk mail. A preliminary draft. y Dept. of Applied Mathematics and Computer Science, Weizmann Institute of Science, Rehovot 76100, Israel. E-mail: naor@wisdom.weizmann.ac.il. 1 Introduction It is quite common now for various companies to offer services on the Web free of charge (or for a promotional fee). These include various search engines (Alta Vista, Infoseek, Inktomi, Lycos, Yahoo, etc.) and shopping arcades and catalogs. An emerging phenomena is that of "meta-services"...
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