About fingerprint sensor workflow in details

1. Welcome

2. Finger print sensor

3. Irteza Rahman [133-15-3057]

4. Index
 What is fingerprint ?
 History
 Fingerprint pattern
 Different identification on fingerprint
 Fingerprint technology
 Fingerprint processing
 References

5. What is
fingerprint?
 An impression or mark made on a surface by a
person's fingertip, especially as used for identifying
individuals from the unique pattern of whorls and
lines.

6. History
 Fingerprinting was first created by Dr. Henry
Fault, a British surgeon in 1882.
 Based on key

7. Fingerprint
pattern
 Arch-The ridges enter from one side of
the finger, rise in the center forming an
arc, and then exit the other side of the
finger.
 Loop-The ridges enter from one side of
a finger, form a curve, and then exit on
that same side.
 Whorl- Ridges form circularly around a
central point on the finger.

8. Fingerprint
pattern
Loop(65%)
Arch(5%)
Whorl(30%)

9. Different
identification
on
fingerprint

10. Fingerprint
Variations

11. Different
identification
on
fingerprint
Crossover: two ridges
cross
each other
Core: centre
Bifurcation: ridge
separates
Ridge ending: end point
Island: small ridge b/w
two
spaces
Delta: space between
ridges
Pore: human pore

12. Fingerprint
technology
 Optical sensor
 Capacitive sensor
 Ultrasonic

13. Fingerprint
processing

14. Fingerprint
processing

15. References
 https://support.apple.com/en-us/HT201371
 https://en.wikipedia.org/wiki/Fingerprint

16. Any question?

17. Thank you