a86eseminar on Bio Metrics
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Transcript of a86eseminar on Bio Metrics
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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