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Luis von Ahn Carnegie Mellon University

Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

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Page 1: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

Luis von AhnCarnegie Mellon University

Page 2: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

Verification technology developed in collaboration with Carnegie Mellon University

“CAPTCHA”

Page 3: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

Help! I’ve been waiting for 20 minutes, and nothing happens

“”

Verification technology developed in collaboration with Carnegie Mellon University

Page 4: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

Verification technology developed in collaboration with Carnegie Mellon University

Page 5: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

(From www.slashdot.org)

QUICKVOTE

Which is the best Computer Science Grad School in the US?

CMU

MIT

vote

Berkeley

StanfordCornell

Washington

Page 6: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

Verification technology developed in collaboration with Carnegie Mellon University

Page 7: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

CAPTCHA Sweat ShopsSpam companies hire humans to

type CAPTCHAs all day long

$2.50 per hour for each human720 captchas per hour per human

1/3 cent per account

Page 8: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

VOTE FOR

LUIS

2012

Page 9: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”
Page 10: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

Can we use this human effort for good?

Roughly 200 million CAPTCHAs are typed every day

10s of human time per CAPTCHA

Page 11: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

Digitizing Books

Scan

OCRDE xi Ii ARIi.. COPBCtrAGE\, DeC. I l 1 QOn.

Tlie royal palace at Frieclericheberg took fire last night. The li.ing himself directed the operations fns extinguishing the lire. The whole structure , , ed.

Page 12: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

Scanned book

Word that OCR can’t read

Randomly distortedimage of word

Page 14: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”
Page 15: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”
Page 16: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”
Page 17: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”
Page 18: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

Words Digitized Per Day

Page 19: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”
Page 20: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”
Page 21: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

Years 1851-1980 will be completed in 2009

Where do the Words Come From?

Page 22: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

400,000,000(6% of the world’s population)

Page 23: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”

www.recaptcha.net

Page 24: Luis von Ahn Carnegie Mellon University. Verification technology developed in collaboration with Carnegie Mellon University “CAPTCHA”