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Pictures at the ATM: Exploring the usability of multiple graphical passwords.

Moncur, Wendy and LePlâtre, Grégory (2007) Pictures at the ATM: Exploring the usability of multiple graphical passwords. In: Proceedings of the SIGCHI conference on Human factors in computing systems, 28th April - 3rd May 2007, San Jose, Calif..

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Abstract/Description

Users gain access to cash, confidential information and services at Automated Teller Machines (ATMs) via an authentication process involving a Personal Identification Number (PIN). These users frequently have many different PINs, and fail to remember them without recourse to insecure behaviours. This is not a failing of users. It is a usability failing in the ATM authentication mechanism. This paper describes research executed to evaluate whether users find multiple graphical passwords more memorable than multiple PINs. The research also investigates the success of two memory augmentation strategies in increasing memorability of graphical passwords. The results demonstrate that multiple graphical passwords are substantially more effective than multiple PIN numbers. Memorability is further improved by the use of mnemonics to aid their recall.This study will be of interest to HCI practitioners and information security researchers exploring approaches to usable security.

Item Type: Conference or Workshop Item (Paper)
ISBN: 978-1-59593-593-9
Uncontrolled Keywords: Human-computer interaction; Security; Graphical interfaces;
University Divisions/Research Centres: Faculty of Engineering, Computing and Creative Industries > School of Computing
Dewey Decimal Subjects: 000 Computer science, information & general works > 000 Computer science, knowledge & systems > 006 Special Computer Methods
300 Social sciences > 330 Economics > 332 Financial economics
000 Computer science, information & general works > 000 Computer science, knowledge & systems > 004 Data processing & computer science
Library of Congress Subjects: H Social Sciences > HG Finance
Q Science > QA Mathematics > QA76 Computer software
Item ID: 1832
Depositing User: RAE Import
Date Deposited: 29 Jan 2008 10:44
Last Modified: 18 Oct 2010 16:29
URI: http://researchrepository.napier.ac.uk/id/eprint/1832

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