Completely Automated Public Turing Test to Tell Computers and Humans Apart

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CAPTCHA
Completely Automated Public Turing Test to Tell
Computers and Humans Apart
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CAPTCHA is a program to let only humans (no bots)
into the garden of Eden
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The CAPTCHA Paradox
A CAPTCHA is a program that must grade tests that
it itself cannot pass!
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What NSF Aladdin can do that companies cannot do
Take the long view
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Companies take the Short View
Build a CAPTCHA to keep bots out
word
word
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Aladdin takes the Long View
A CAPTCHA can formalize a hard AI problem. It can
turn a soft imprecise problem into a hard
well-defined AI-challenge.
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A viable working CAPTCHA solves e-problems
Chat Rooms Spam On-line Polls Email Accounts Data
Collection Worms Dictionary Attacks
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A dead broken CAPTCHA signals HARD AI Problem
Solved!
Quality OCR (Optical Character Recognition) OCR
that slows down when it needs to READS the
library of congress