Title:
IMAGE-BASED HUMAN INTERACTIVE PROOFS
Document Type and Number:
WIPO Patent Application WO/2010/080218
Kind Code:
A3
Abstract:
This document describes image-based human interactive proofs (HIPs). In some cases these proofs may be used when a browser at a client is used to access resources from a web server. Before access to the resources is enabled, the client can be challenged by the web server with an image-based puzzle. The image-based puzzle is configured to enable distinctions to be made between human input and non-human input. Input to answer the image-based puzzle can be formed via the client and communicated to the web server. The web server receives the input from the client and selectively enables client access to the resources based upon the input. In at least some embodiments, the web server can make use of a community database that stores client answers to image-based puzzles to assist in distinguishing between human input and non-human input.
Inventors:
CHICKERING DAVID M (US)
IVERSON KRISTOFER N (US)
IVERSON KRISTOFER N (US)
Application Number:
PCT/US2009/065235
Publication Date:
September 02, 2010
Filing Date:
November 20, 2009
Export Citation:
Assignee:
MICROSOFT CORP (US)
International Classes:
G06F3/048; G06F15/17
Foreign References:
| US20080127302A1 | 2008-05-29 | |||
| US20070201745A1 | 2007-08-30 | |||
| US20050065802A1 | 2005-03-24 |
Other References:
LUIS VON AHN ET AL., COMMUNICATIONS OF THE ACM, vol. 47, no. ISS.2, 2004, pages 56 - 60, XP008147342
HENRY S. BAIRD ET AL., PROC., IS&T/SPIE DOCUMENT RECOGNITION & RETRIEVAL, 2005, pages 191 - 196, XP008147333
MONICA CHEW ET AL., PROC. OF THE 7TH ISC, 2004, pages 268 - 279, XP008147337
See also references of EP 2359229A4
HENRY S. BAIRD ET AL., PROC., IS&T/SPIE DOCUMENT RECOGNITION & RETRIEVAL, 2005, pages 191 - 196, XP008147333
MONICA CHEW ET AL., PROC. OF THE 7TH ISC, 2004, pages 268 - 279, XP008147337
See also references of EP 2359229A4
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