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Search Publications by: Yee-Yin Choong (Fed)

Displaying 101 - 125 of 144

Human Generated Passwords - the Impacts of Password Requirements and Presentation Styles

August 2, 2015

Author(s)

Paul Y. Lee, Yee-Yin Choong

The generation stage of the user password management lifecycle is arguably the most important yet perilous step. Fulfilling minimum length and character type requirements while attempting to create something memorable can become an arduous task, leaving

What 4,500+ people can tell you  Employees' Attitudes toward Organizational Password Policy Do Matter

August 2, 2015

Author(s)

Yee-Yin Choong, Mary F. Theofanos

Organizations establish policies on how employees should generate, maintain, and use passwords to authenticate and gain access to the organizations information systems. This paper focuses on employees attitudes towards organizational password policies

Ten-Print Fingerprint Self-Captures: Graphics-only User Guidance without Language

September 29, 2014

Author(s)

Yee-Yin Choong, Mary F. Theofanos

Users of biometric systems have expanded from traditional law enforcement operators to the general population with diverse backgrounds. Past research has shown that usability is improved when users received real-time system feedback regarding their hand

A Cognitive-Behavioral Framework of User Password Management Lifecycle

June 22, 2014

Author(s)

Yee-Yin Choong

Passwords are the most commonly used mechanism in controlling users access to information systems. Little research has been established on the entire user password management lifecycle from the start of generating a password, maintaining the password

United States Federal Employees' Password Management Behaviors  A Department of Commerce Case Study

April 8, 2014

Author(s)

Yee-Yin Choong, Mary F. Theofanos, Hung-Kung Liu

Passwords are the most prevalent method used by the public and private sectors for controlling user access to systems. Organizations establish security policies and password requirements on how users should generate and maintain their passwords, and use

Taxonomic Rules for Password Policies: Translating the Informal to the Formal Language

December 9, 2013

Author(s)

Kevin Killourhy, Yee-Yin Choong, Mary Theofanos

A password policy may seem formal in the sense that it is written in a legalistic language, giving the impression of a binding contract. However, such policies are informal in the logical sense that the policy statements are not written in a clear

Fingerprint Self-Captures: Usability of a fingerprint system with real-time feedback

September 26, 2012

Author(s)

Yee-Yin Choong, Mary F. Theofanos, Haiying Guan

The performance of a biometric system depends on the quality of interaction of the biometric subject and the system. Past research has shown that fingerprint image quality is improved when the subjects received feedback from the system. However, the

Usability of PIV Smartcards for Logical Access

August 31, 2012

Author(s)

Mary F. Theofanos, Emile L. Morse, Hannah Wald, Yee-Yin Choong, Celeste Paul, Aiping L. Zhang

Usability of PIV Smartcards for Logical Access

June 28, 2012

Author(s)

Emile L. Morse, Mary F. Theofanos, Yee-Yin Choong, Celeste Paul, Aiping L. Zhang, Hannah Wald

This paper presents the findings of a PIV usability pilot study conducted at NIST during the summer of 2010. The study focused on factors that affected users' perceptions and adoption of PIV smartcards. Based on observation of the study participants, the

Basing Cybersecurity Training on User Perceptions

April 2, 2012

Author(s)

Susanne M. Furman, Mary F. Theofanos, Yee-Yin Choong, Brian C. Stanton

The National Initiative for Cybersecurity Education (NICE) will be conducting a nationwide awareness and outreach program to effect behavioral change. To be effective, an educational campaign must first understand users perceptions of computer and online

Real-time Feedback for Usable Fingerprint Systems

October 11, 2011

Author(s)

Mary F. Theofanos, Brian C. Stanton, Yee-Yin Choong, Haiying Guan

Compared with traditional password and other identification methods, biometrics like face, iris, and fingerprint for automatic personal identification/verification have many advantages, and are increasingly gaining popularity in all kinds of applications

A Field Study of User Behavior and Perception in Smartcard Authentication

September 9, 2011

Author(s)

Emile L. Morse, Celeste L. Paul, Aiping L. Zhang, Yee-Yin Choong, Mary F. Theofanos

A field study of 24 participants over 10 weeks explored user behavior and perception in a smartcard authentication system. Ethnographic methods used to collect data included diaries, surveys, interviews, and field observations. We observed a number of

An Empirical Study of Korean Cultural Effects on the Usability of Biometric Symbols

June 17, 2010

Author(s)

Young-Bin Kwon, Yooyoung Lee, Yee-Yin Choong

Biometrics is an umbrella term for methods that identify an individual based on physiological and/or behavioral characteristics such as fingerprint, face, iris, retina, vein, palm, voice, gait, signature, etc. The use of biometric systems is increasing