Carnahan Conference 2006 - An Assessment of Dynamic Signature Forgery and Perception of Signature Strength

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Carnahan Conference 2006 - Keystroke Dynamics Verification using a Spontaneously Generated Password

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Carnahan Conference 2006 - Perceptions of Retinal Imaging Technology for Identifying Livestock Exhibits

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Carnahan Conference 2006 - Implementing Ergonomic Principles in a Biometric System: A look at the Human Biometric Sensor Interaction

Abstract: This paper discusses the implementation of ergonomic principles in a biometric system. Historically, the biometrics community has performed limited work in the area of ergonomics and usability. This research discusses an experiment involving a swipe fingerprint sensor which examined the human interaction with the biometric device called the Human Biometric Sensor Interaction (HBSI). The purpose of this study was to examine issues related to fingerprint acquisition of all ten digits. The results revealed that there are fingerprints that have higher Failure to Acquire (FTA) rates than others, which reveals that more research is needed in the area of biometric usability and ergonomics, namely understanding how the human interacts with the biometric sensor.

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Changes in Finger Preferences Over a 6 Week Period of Interaction

Abstract: The Human Biometric Systems Interaction (HBSI) is a field that focuses on user perceptions and preferences. This project is to establish whether the user is likely to change their preferred fingers after interacting with an optical fingerprint sensor over a time frame of 6 weeks.

Methodology: The methodology involves having subjects interact with a commercially available 500 dpi optical sensor to acquire 10 images from their three preferred fingers during week 1 of the experiment and then 3 images during subsequent interactions for 6 weeks. After the final image acquisition, the users will be asked to re-rank their preferred fingers. In order to evaluate the changes in preference from pre to post interaction, a series of Chi-Squared tests will be run on the three finger preference rankings.

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Image Quality and Temperature Before and After Repeated Fingerprint Samples

Abstract: This project is to establish whether the temperature of the finger changes over repeated samples, and whether there are any ramifications to image quality and fingerprint matching performance. The analysis statistically analyzed the image quality between the two (before and after images)

Methodology: The methodology involves having subjects interact with a commercially available 500 dpi optical sensor to acquire three images of the same dominant index finger which will also be used to record temperature. The user would then interact with eight other sensors (seven of them swipe, and one optical) using their dominant index finger on all sensors. The last sensor that the individual will interact with will be an optical sensor of the same model used at the beginning of the experiment. Similar to before, the subject will provide three additional images. After the final sensor, the temperature of the dominant index finger will be recorded again.

A commercially available image quality software will be used to calculate image quality for the fingerprint samples. In order to test if the image quality is the same before and after interaction, Wilcoxon Signed Rank Test for Paired Comparisons, which is a non-parametric test will be performed. VeriFinger 5.0 by Neurotechnologija will be used to measure False Non Match Rate (FNMR) and False Match Rate(FMR).

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