Biometric Systems, Privacy Enhancing Technologies, and Wireless Sensor Networks

ITC – 596
Assignment - 2
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Table of Contents
(a) Biometric Systems................................................................................................................4
Fingerprint Recognition System............................................................................................4
Hand Geometry recognition system.......................................................................................6
Iris Recognition......................................................................................................................6
(b) Privacy enhancing technologies...........................................................................................8
(a) Wireless Sensor Networks....................................................................................................9
References................................................................................................................................12
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List of Figures
Figure 1 Fingerprint biometric system.......................................................................................5
Figure 2 Iris recognition system.................................................................................................7
Figure 3 WSN architecture.......................................................................................................10
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(a) Biometric Systems
These are the technological systems which make use of the knowledge about any person in
order to identify the person. They highly depend on the particular data related to the
biological traits which are unique so as to work more effectively. The biometric systems use
algorithms to identify the user or an individual. The algorithms use biological data in the
processing. The technology has changed the identification process of the people and at the
same time reducing the time used in the verification and identification process. Following are
the types of the biometric systems:
 Facial recognition
 Iris recognition
 Hand geometry recognition
 DNA recognition
 Fingerprint recognition
 Speaker recognition
 Signature recognition, etc.
Fingerprint Recognition System
The individuals are identified using their fingerprints. The block diagram of the working of a
fingerprint recognition system is given with this.
1. Fingerprint sensor: This sensor captures the digital image of the patterns of the
fingerprint. This is usually an electronic device. The image is called as live scan
which gets captured by the sensor. Then this live scan gets processed digitally and
biometric template of that fingerprint scan is created. Then this is stored in a database
and then at the time of verification and identification, these are used.
2. Image processing: This is the second stage of the fingerprint biometric system. This
step extracts the minutiae from the fingerprint scanned. This highly depends on the
quality of the image.
3. Minutia processing: The crossing number method is used for the extraction of the
minutia. A 3*3 window is used for extracting the minutia.
4. Minutia match: Minutia algorithm determines if the set of two minutia are similar or
not.
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