17-06-2013, 02:59 PM
Biometric Authentication
Biometric Authentication.ppt (Size: 3.62 MB / Downloads: 22)
Biometrics
Bio + metrics:
The statistical measurement of biological data.
Biometric definition:
Automatically recognizing a person using distinguishing personality.
History
• The development of digital signal processing techniques in the 1960s led to work in automatic human identification
– Speech and fingerprint recognition systems
– Hand geometry systems
• The 1970s saw development and deployment of hand geometry systems
"automated personal identification”
– Retinal and signature verification systems: came in the 1980s, followed by the face systems
– Iris recognition systems: were developed in the 1990s
Why Biometrics?
Biometrics are required to :
Ensure Enhanced security and safety
Identify an Individual Uniquely
Verify the identity of an individual who he/she claims to be
Provide access to high security zones/areas to authorized individuals
Identify criminals and prove them guilty beyond doubt
Characteristics of Biometrics System
More accurate.
Less expensive.
Faster.
More limited in function.
Requires more effort by user.
HOW IT WORKS
The hardware captures the salient human characteristic
The software interprets the resulting data and determines acceptability.
Iris Properties
Iris pattern possesses a high degree of randomness: extremely accurate biometric.
Genetically independent: identical twins have different iris pattern.
Stable throughout life.
Highly protected, internal organ of the eye.
Patterns can be acquired from a distance (1m).
Patterns can be encoded into 256 bytes.