Google Inc.

David John Abraham

Luc Vincent

Sacha Christophe Arnoud

Kong Man Cheung

Marco Zennaro

Edison Tan

Yannis Agiomyrgiannakis

Joseph Andrew Mcclain

Colin Mcmillen

Luis Von Ahn

Bryan Arthur Pendleton

Angelique Moscicki

Mark R Russell

Michael Crawford

Systems and methods for generating and performing a three-dimensional audio CAPTCHA are provided. One exemplary system can include a decoy signal database storing a plurality of decoy signals. The system also can include a three-dimensional audio simulation engine for simulating the sounding of a target signal and at least one decoy signal in an acoustic environment and outputting a stereophonic audio signal based on the simulation. One exemplary method includes providing an audio prompt to a resource requesting entity. The audio prompt can have been generated based on a three-dimensional audio simulation of the sounding of a target signal containing an authentication key and at least one decoy signal in an acoustic environment. The method can include receiving a response to the audio prompt from the resource requesting entity and comparing the response to the authentication key.

Systems and methods for three-dimensional audio CAPTCHA

According to one aspect, embodiments of the invention provide a system and method for utilizing the effort expended by a user in responding to a CAPTCHA request to automatically transcribe text from images in order to verify, retrieve and/or update geographic data associated with geographic locations at which the images were recorded.

System and method for updating geographic data

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Brooklyn, NY, United States of America

David John Abraham