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BIOMETRICS FOR RECOGNITION

OF USER BY THE SYSTEM

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Presentation Outlines

Traditional methodsofsecurity

Needfor Biometrics

Biometricsrecognitiontechniques

How Biometricswork

Applications

Issuesandconcerns

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ATMs Cellularphones

Smartcards

DesktopPCs

Workstations Computer

networks

PINsandpasswords may beforgotten,

Token-basedidentification methodssuch

as passportsanddriverslicenses may be

forged,stolen,orlost.

Why Biometrics ?

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Biometricsreferstotheautomatic

identification ofaperson basedonhisor

herphysiologicalor behavioral

characteristics.

WHAT IS BIOMETRICS ?

BIO-Physical or Behavioral

METRICS-To measurecharacteristics

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Physic l i metrics:

Fi er ri t

F c i lrec iti /f cel c t i

H geometry

Irissc

Reti lsc

V scul r patter s

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Behavioral biometrics:

Speaker/voicerecognition:

Analyzing vocal behavior

Signature/handwriting:

Analyzing signature dynamics

Keystroke/patterning:Measuring the time spacing of

typed words

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Fingerprintrecognition

y Aliveacquisitionofapersonsfingerprint.

Dots (verysmallridges),

Space betweentwotemporarilydivergentridges),

Spurs (anotchprotruding

from aridge),

Bridges (smallridges joiningtwolongeradjacentridges),

crossovers (tworidgesthat

crosseachother).

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Biometric sensor:-acquire images .

Preprocessing:-reference points

extraction,contour spacing,binarization.

Feature extraction:-removal of

noise,convert data into numeric featuretemplate.

Matcher:-

- Compare extraced template with

previously enrolled templates.- Determine degree of similarity &

output matching score.

Decision:-matching score compare

with threshold.

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Handorfingergeometryisan

automated measurementofmany

dimensionsofthehandandfingers.

Hand Geometry

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Iris recognition

Irisscanning measurestheirispatterninthecoloredpartofthe

eye,

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Signature Verification:

anautomated methodofmeasuring anindividualssignature.

Thistechnologyexamines speed,direction,and

pressure ofwriting;thetimethatthestylusisinandout

ofcontact withthe paper.

Speaker / Voice Recognition:

Voice or speaker recognition uses vocal

characteristics to identify individuals using a pass-

phrase.

A telephone or microphone can serve as a

sensor,

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KeystrokeDynamics:

Keystrokedynamicsisanautomated methodof

examininganindividualskeystrokesona

keyboard.

Thistechnologyexaminessuchdynamics

asspeedandpressure,thetotaltimetakentotype

particularwords,andthetimeelapsed betweenhittingcertainkeys.

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Prevent unauthorized access to ATMs,

Cellular phones, Smart cards, Desktop

PCs, Workstations, Computernetwork.

Criminal identification,prison security.

Electronic commerce,Electronic banking.

In automobiles biometrics can replacekeys with keyless entry devices.

Airport security,voter cards,civilian

applications.

APPLICATIONS

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Issuesand Concerns

Biometricisanemergingareawith many

opportunitiesforgrowth.

Possiblyinthenearfuture,you willnot

havetorememberPINsandpasswordsand

keysinyour bagsorpocketswill bethingsof

thepast.

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REFERENCES

Michael J.Potel,IEEE paperon Graphicsand

Security: Exploring visual Biometrics.

Bryan Lipinski, Iris Recognition:Detectingthe Iris

J Daugman, How Iris Recognition Works, IEEE

Conf. onICIP, 2002.

International Biometric Group website,

http://www.biometricgroup.com