23636372 bio metrics seminar ppt

8/3/2019 23636372 Bio Metrics Seminar Ppt

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BIOMETRICS


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BIOMETRICS

Definition Biometrics is the identification or

verification of human identity through the

measurement of repeatable physiologicaland behavioral characteristics


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Categories of BIOMETRICS:

Biometrics can be sorted into two classes:

PhysiologicalExamples-face,fingerprints,hand geometryand iris Recognition,dna.

Behavioral

Examples-signature and voice.


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Basic characteristics of BIOMETRIC

Technologies:

Universality: Every person should have the characteristic.People who are mute or without a fingerprint will need to beaccommodated in some way.

Uniqueness: Generally, no two people have identicalcharacteristics. However, identical twins are hard to distinguish.

Permanence: The characteristics should not vary with time. Aperson's face, for example, may change with age.

Collectibility: The characteristics must be easily collectible andmeasurable.

Performance: The method must deliver accurate results undervaried environmental circumstances.


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Working principle :

Biometric devices consist of a reader or scanning

device software that converts the gathered informationinto digital form, and a database that stores thebiometric data with comparison with existing records.

Enrollment Mode.

Verification Mode.


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Modes:

Enrollment Mode:A sample of the biometric trait is captured,processed by a computer, and stored for later

comparison . Verification Mode:

In this mode biometric system authenticates a

persons claimed identity from their previously

enrolled pattern.


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Biometric Modalities:

Fingerprint Recognition:For fingerprint Recognition look at :

Friction ridges.

Core

Crossover.

Delta.

Island

Ridge Ending.

Pore.


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Minutiae

Uses ridge endings ,bifurcations on a personsfinger to plot points know as Minutiae .

The number and locations of the minutiae vary from

finger to finger in any particular person, and from

person to person for any particular finger.

Finger Image Finger Image + Minutiae Minutiae


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Face Recognition:

It involves recognizingpeople by there:

Facial features.

Face geometry.

Principle:

Analysis of unique shape, pattern andpositioning of facial features.


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Voice Recognition:

Voice recognition is not the same as

speech recognition, it is speaker

recognition. Considered both physiological andbehavioral.

Popular and low-cost, but less accurateand sometimes lengthy enrollment.


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Iris Recognition:

Iris: It is the coloured area of the eye thatsurrounds the pupil.

It is a protected internal organ whoserandom texture is stable throughout

life.

The iris patterns are obtained through avideo-based image acquisition system .


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Iris Images:


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Signature Verification:

Dynamic/On-line: using electronically

instrumented device.Principle:

The movement of the pen during the signing

process rather than the static image of thesignature.Many aspects of the signature in motioncan be studied, such as pen pressure, the soundthe pen makes.


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Biometric devices:

Optical fingerprint scanner:


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Advantages of Biometrics:

Biometric identification can provide extremely accurate,secured access to information

Current methods like password verification havemany problems (people write them down, they forgetthem, they make up easy-to-hack passwords) .

Automated biometric identification can be done veryrapidly and uniformly, with a minimum of training .

Your identity can be verified without resort to

documents that may be stolen, lost or altered.


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Disadvantages of BIOMETRICS:

The finger print of those people working in Chemicalindustries are often affected. Therefore thesecompanies should not use the finger print mode ofauthentication.

It is found that with age, the voice of a person differs.Also when the person has flu or throat infection the voice

changes

For people affected with diabetes, the eyes getaffected resulting in differences.

Biometrics is an expensive security solution.


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BIOMETRICS SECURITY:

Security personnel look for biometric data thatdoes not change over the course of your life;

that is, they look for physical characteristics

that stay constant and that are difficult to fake

or change on purpose.

23636372 bio metrics seminar ppt

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