Human Interactive Proofs (HIPs)

Allison Coates: Investigations into Captchas
Alma Whitten: Abstract fot Human Interactive Proof
Andrei Broder: Preventing bulk url submission by robots in AltaVista PDF
Henri Baird: The Ability Gap Between Human & Machine Reading Systems PDF
Dirk Balfantz:Some Thoughts on HIPs/Related Research at CSL Security Group
Bartosz Przydatek: On the (im)possibility of a text-only Captcha PDF
Charles H Bennett: Time bracketed video authentification by online challenges
Tom Berson: Preliminary Ideas about Human Interactive Proofs PDF
Luis Alfonso von Ahn: Telling Humans and Computers appart (Automatically) PDF
Luis Alfonso von Ahn, Manuel Blum, John Langford: Telling Humans and Computers appart (Automatically)
Daniel Lopresti, Chilin Shih: Human Interactive Proofs for Spoken Language Interface PDF
Richard Fatemana: No title
Philip Brighten Godfrey: Text-based CAPTCHA Algorithms PDF
David Goldberg: Statement for Human Interactive Proofs Workshop
Nick Hopper: Security and complexity aspects of Human Interactive Proofs PDF
Ari Jueles: At the Juncture of Chryptography and Humanity PDF
Lenore Blum: The Aladdin Center for ALgorithm ADaptation,Dissemination and Integration PDF
Jitendra Malik: Visual Shape Recognition and CAPTCHAs PDF
Manuel Blum: PhonOID Protocol Class #81 PDF
Monica Chew: Techniques for human authentication
George Nagy: Why am I here?
Nancy Chan: Abstract of Sound Oriented Captcha PDF
Moni Naor: Humans, Computers and Cryptography
Adrian Perrig, Dawn Song: New Directions for User Authentication: Reflex instead of Reflection PDF
Kris Popat: Background and Interests for HIP'2002
Prateek Sarkar: Distinguishing between valid users and non_users by ability to interpret and respond
Rachna Dhmija: Deja vu: A HIP Prototype Using Images for Authentification
Rachel Rue: Eighty-six bits of memory magic PDF
Rober H. Sloan: Two hats: Program director, computational learning theory researcher
A. Lawrence Spitz: A Feeble Classifier Relying on Strong Context PDF
Stuart Haber: HIPs and DRM/DPM systems
Thomas M.Breuel: Semantic Cryptography
Doug Tygar: HIP Projects at SIMS Dept, UC Berkeley
Udi Manber: Web Exploits--What bad people are doing and how it affects the rest of us
Ke Yang: Issues for Chinesse CAPTCHA PDF


This material is based upon work supported by National Science Foundation under Grant No. 0122581. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the
National Science Foundation