Overview of Biometrics with a Case Study in Hand Geometry

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Overview of Biometrics with a Case Study in Hand
Geometry

• Nithin Reddy
• CS 265, Mark Stamp
• 05 April 2004

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Bertillonage

• The first biometric system
• Developed in the 19th Century
• Used in Prisons
• Took a long time (60 minutes) to collect
  measurements

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Biometrics Overview

• the measurement of people by computers to provide
  verification and/or identification
• Verification checking that an individual is who
  she says she is
• Identification determining who an individual is
• Depending on use doesn't need to uniquely
  categorize every person

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Biometrics Process

• Enrollment phase
• Digital representation
• Template Creation and Storage
• Recognition phase
• Digital representation
• Comparison using Pattern matching

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Biometrics Process
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Biometrics Performance

• Accuracy
• False matches letting a bad guy in
• False nonmatches keeping a good guy out
• Speed
• Storage size of Templates

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Biometrics Acceptance

• Easy-to-use
• Safe perceived safety, not actual safety
• Private should not be thought of as shared
• Fingerprint information is used by government,
  users might assume that big brother is watching
  them

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Types of Biometrics
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Hand Geometry

• Most common type of biometric system
• measurements include the shape of the hand and
  the length, width, and height of the fingers
• Used for verification, because human hand is not
  unique
• Access Control and User Tracking

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Hand Reader
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Using the Hand Reader

• Enrollment
• User ID is given out
• template is generated
• Recognition
• ID number is entered
• Hand is compared with template

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Hand Geometry Analysis

• Advantages
• Quick 5 second recognition time, 1 minute
  enrollment time
• High Acceptance rate
• Disadvantages
• Can't use on young / old people
• Jewelry can interfere