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The use of biometric technologies for weapon system security Mark Edwards Extremities Performance Research Group Department of Design & Technology Loughborough University. Introduction. Increasing weapons power and portability Unauthorised usage ideally avoided

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The use of biometric technologies for weapon system securityMark EdwardsExtremities Performance Research GroupDepartment of Design & TechnologyLoughborough University


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Introduction

  • Increasing weapons power and portability

  • Unauthorised usage ideally avoided

  • Fingerprinting technology provides a method for making systems secure


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Fingerprinting - Advantages

  • Compact

  • Quick

  • Simple operation

  • Uses already proven technology

  • Not without problems!

Hitachi Digital Fingerprint sensor

Kinetic Sciences Inc Vancouver


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Fingerprinting - Problems

  • A process of comparison of ridges

  • Ridge pattern duplication

  • Severed limbs

  • Techniques exist to prevent this

    • e.g. temperature, conductivity

    • All can be bypassed

www.dansdata.com


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Finger Anatomy

  • Various bio-materials present

  • Differing mechanical properties

  • Gives the fingertip non linear viscoelastic properties

    • Force dependant

    • Rate dependant

    • History dependant


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Fingertip Deformation Modelling

  • Deformation amount controls fingerprint size

  • Fingertip modelled as a homogeneous material

  • Use finger size and force applied to predict fingertip deformation

  • Force can be measured, leaving finger size for differing between individuals


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Body Proportion

  • Been used for centuries by artists

  • Recent surveys have shown strong correlations (Roebuck, 1995)

  • Is fingertip size correlated with other body characteristics?

    • Height

    • Weight

    • Limb lengths


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Aim

Investigating correlations between hand size and whole body characteristics

Format

70 male participants

14 hand measurements

Stature and weight measurement

Anthropometry survey


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Anthropometry Survey

  • Results

    • Pearson correlations produced for all measurement pairings

    • Hand length highly correlated to arm length

    • Arm length highly correlated to height

    • Wrist circumference highly correlated to weight

  • Conclusions

    • Body proportionality does include the hand

    • More detailed measurements of the hand must be performed


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Practical Application

  • A reliable area measurement technique is needed

  • Tests of laboratory based techniques

    • Problems found due to variations

      in ink deposited

    • Similar problems with oil, dirt,

      moisture etc

    • Physiological variables also require consideration

  • These must be accounted for in

    any practical application of this idea


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Application – Concept 1

  • Fingerprint scanner combined with a force applying platen

  • Advantages

    • Simple design

    • Uses much existing technology

  • Disadvantages

    • Platen will add bulk to the device

    • Possible discomfort due to pressure on fingernail


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Application – Concept 2

  • Fingerprint scanner combined with a force sensor

  • Advantages

    • Compact

    • Operated in the same manner as existing fingerprint sensors

    • Uses much existing technology

  • Disadvantages

    • An accurate model of fingertip deformation required


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Application – Concept 3

  • Concept 2 combined with body size prediction

  • Advantages

    • Most secure

    • Uses much existing technology

  • Disadvantages

    • Most complex

    • Extra sensor required for predicted body dimension

    • Limited applications


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Summary

  • Current fingerprinting security is not infallible

  • Fingertip deformation influences Fingerprint area

  • Fingertip deformation is predicable

  • The human body is proportional in scale

  • No current model predicting fingerprint area


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Future Work

  • A method for augmenting fingerprint recognition

  • Collection of anatomical and physiological data to aid the development of a predictive model of the fingertip

  • Integration of fingertip model into biometric systems


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Contact

Mark Edwards - Researcher

m.b.edwards@lboro.ac.uk

+44 1509 228 302

Mr George E Torrens - Supervisor

g.e.torrens@lboro.ac.uk

+44 1509 222 664

Department of Design & Technology

Loughborough University

Loughborough

Leicestershire LE11 3TU

UK

www.extremities-performance.com


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