3rd TIPPI Workshop

Adaptive Challenge Questions Algorithm

Speaker: Farzaneh Asgharpour, Indiana University

Title: Adaptive Challenge Questions Algorithm

Abstract:
We introduce the Adaptive Challenge Questions (ACQ) algorithm as a password recovery/reset mechanism. We call the algorithm adaptive, because it identifies the users by their recently visited web sites. An example of an adaptive challenge question is "Which one of these web sites have you been visiting recently: A, B, or C?". The web sites presented in each ACQ must describe the online behavior of the specific user. Each web site given in an ACQ is presented to the end users, as a scrollable screen-shot of the related web page. The advantage of the ACQ algorithm is that it minimizes the user's cognitive load by replacing precise recall of some registered information with image recognition. An online service provider could use the algorithm to identify the users in the context of password recovery/reset mechanism.


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