Fingerprint sensors

1. A POWER POINT PRESENTATION
On
FINGER PRINT SENSORS
Presented by
B .Bhanu sankar
12030-EC-214
• DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING
• A.A.N.M&V.V.R.S.R POLYTECHNIC
• SESHADRIRAO KNOWLEDGE VILLAGE
• GUDLAVALLERU - 521356
• ANDHRA PRADESH.

2. FINGER PRINTS

3. CONTENTS
 INTRODUCTION
 WHAT IS SENSOR?
 FINGER PRINT SENSORS
 CLASSIFICATION OF SENSORS
 FINGER PRINT CLASIFICATION
 AUTOMETIC VERIFICATION SYSTEM
 FEATURE EXTRACTION
 ADVANTAGES
 APPLICATIONS
 CONCLUSION

4. INTRODUCTION
Fingerprint recognition is one of the oldest and
most researched fields of biometrics.
Some biological principles (Monessen's 1971)
related
to fingerprint recognition are as follows:
• The configuration types are individually
variable; but they vary within limits that
allow for a systematic classification.
Herein lies the basis for fingerprint
classification.
• The configuration and minute details of
furrows are permanent and unchanging.

5. WHAT IS SENSOR?
• Sensor is a device or a thing which reacts
to any change in the environment. For
example our body have five natural
sensors.

6. Fingerprint Sensors

7. Fingerprint Sensors
• Optical
• Silicon Based Capacitive Sensors
• Ultrasound
• Thermal

8. Optical Sensors
 The finger is placed on a coated hard plastic plate.
 The brightness is either adjusted automatically or
manually, leading to a usable image.

9. Silicon Based Sensors
 Silicon technology is introduction in the late 90's.
 Most silicon, or chip, technology is based on DC
Capacitance, but some also use AC Capacitance.

10. Direct v/s Active Capacitive
Measurement

11. Ultrasound Sensors
• Ultrasound technology is perhaps the most accurate of
the fingerprint technologies.
• It uses transmitted ultrasound waves and measures the
distance based on the impedance of the finger, the plate,
and air.

12. Thermal Sensors
• Uses Pyro Electric material.
• This effect is quite large, and is used in infrared
cameras.

13. Fingerprint Classification
Whorl Right Loop Left Loop
Tented Arch Arch

14. Line Types Classification
Arch:
”. Loop:.
Ellipse:
Bifurcation:.
Island
Tented Arch Spiral: Rod:

15. Automatic Verification System

16. Artificially
created
Biometrics
Attack at
the
Database
Attacks
Attacking
Via Input
Port

17. ADVANTAGES
 High security
 More accurate
 Easy to identify the Humans

18. •Banking Security - ATM security, card transaction
•Physical Access Control (e.g. Airport)
•Information System Security
•National ID Systems
•Passport control
•Voting
APPLICATIONS

19. CONCLUSION
• Fingerprint security system is most useful for all
systems. It provides high security. It is more
accurate. I can say one thing by using finger
print sensors that we can reduce the robberies.

21. ANY QUERIES?