What is Poroscopy and Edgeoscopy?

2. POROSCOPY AND EDGEOSCOPY
BY ANUSHKA MUKHERJEE
VOLUNTEER OF APPLIED FORENSIC RESEARCH SCIENCES

3. CONTENTS
 LEARNING OUTCOME
 INTRODUCTION TO FINGERPRINT
 POROSCOPY
 CASE STUDY ON POROSCOPY
 EDGEOSCOPY
 CASE STUDY ON EDGEOSCOPY
 FORENSIC SIGNIFICANCE
 CONCLUSION
 MCQ

4. LEARNING OUTCOME
You will learn about –
Importance of Poroscopy and Edgeoscopy
Detailed knowledge about Poroscopy and Edgeoscopy

5. INTRODUCTION OF FINGERPRINT
Fingerprints are unique to each person and cannot be duplicated. In
many cases, latent fingerprints do not develop properly or are
unclear. A little part of a fingerprint can be recovered in some cases,
though. Comparison of crime scene fingerprints with those of
suspects becomes exceedingly difficult at this point. So that he
could overcome these obstacles, Locard conducted research on
poroscopy and edgeoscopy. Consequently, the comparison method
becomes more visible.
SOURCE - GOOGLE

6. CONT’D ….
It is possible to compare the features of two
fingerprints based on certain criteria. There
are diverse ridge ends, island formations,
lakes, cores, deltas, etc., among other things.
Additionally, tiny sweat pores may be seen on
the fingers, palms, and soles of the feet, which
create distinctive patterns that can be used to
identify a person.

7. POROSCOPY
On the plantar and palmer surfaces of the fingers,
sweat pores are studied. It is also used as a
technique of identifying. Forensic scientists found it
to be a valuable tool. It was Edmond Locard, in 1912,
who first proposed this method of human
identification. After all, anything that comes into
contact with another object leaves a trail behind.

8. It was proven that the sweat pores found on the
fingerprint ridges are permanent, unique, and
unchangeable. Pores in the ridge are investigated
when the ridge characteristics fail to indicate the
identity of the individual. He also outlined some
criteria that may be used to identify an individual.
CONT’D ….
SOURCE - GOOGLE

9. Person to person, the quantity and frequency of
pores, the interspacing between two holes, the
form and size, and the position of the pores on
the fingerprint may all be examined. Stereo-
microscope may be used to see the pores, and a
digital micro camera can be used to take photos
of them.
CONT’D ….
SOURCE - GOOGLE

10. CASE STUDY ON POROSCOPY
In France, on June 19th, 1912, an apartment was broken
into. The criminal site yielded only a few blurry
fingerprints. Boudet and Simonin, two suspects, were
brought to the police station to have their fingerprints
matched. The examiners compared Boudet's and Simonin's
fingerprints, and discovered 78 and 94 identical spots,
respectively.

11. EDGEOSCOPY
The examination of the margins of fingerprint ridges is
known as edgeoscopy. Similar to the poroscopy, this
varies from one to individual. Ridge edges have distinct
features due to their alignment and form. It also varies
in terms of the location of the pores on the fingerprint
itself.
SOURCE - GOOGLE

12. It was Salil Chatterjee, in 1962, who invented this
approach while seeking for a novel way for criminal
identification. In his classification, he divided the
edges into seven different types: straight, convex,
peaked, table, pocket, concave and angular. When
fingers are burnt, fingerprint ridges are not
destroyed and can be restored.
CONT’D ….
SOURCE - GOOGLE

13. CASE STUDY ON EDGEOSCOPY
Details of a case study that illustrates this technique are
provided. Robert J. Phillips in a famous case burnt his hands
with acid to erase fingerprints after committing a crime in
1941. The physicians used a scalpel to remove the skin from
the fingers and chest, and then tapped the finger against the
chest. It took three weeks, during which time his chest skin
grew up to his fingertips, for him to be caught and
sentenced to prison for his crime.

14. FORENSIC SIGNIFICANCE
The importance of poroscopy and edgeoscopy in forensic
science cannot be overstated. This is the third stage of
fingerprint detail inspection, in which all pores and ridges
are inspected. It has evolved into a critical component of
an Automated Fingerprint Recognition System. These tests
are more accurate and dependable. These can also be
done on a tiny piece of a recovered fingerprint from a
crime scene.

15. Even though criminals tried to conceal their fingerprints
after committing crimes, they always left behind some
evidence that allowed us to identify them. Forensic
investigators need only a tiny amount of fingerprint
evidence to suspect someone's involvement in a crime
scene. Such minute features require a great deal of hard
effort and thorough study in order to be identified.
CONCLUSION

16. MCQ
Q. Which instruments are used in Poroscopy?
1) Electron microscope and digital micro camera
2) Standard compound microscope and digital camera
3) Stereo-microscope and digital micro camera
4) Digital microscope and single lens camera