It is one of the topic of criminalistics. Ear prints are one of the important physical evidences that are of significant value in the forensic investigation and helps to reach the perpetrator. ear and every individual are believe to have unique ear prints. They are mainly found on the cases like Burglary, theft, Homicide, etc.

1. - Shreya Ramteke
- M.Sc. I(Forensic Science)
- Gov. Institute of Forensic
Science, Nagpur.

2. Table of contents
01
02
03
04
INTRODUCTION
DEVELOPMENT METHODS
LIFTING METHODS
REFERENCE

3. INTRODUCTION
EAR PRINT :- When a human ear is pressed against a surface, materials present on the ear's
surface (waxes, skin oils, etc.) are left behind, forming a two-dimensional "ear
print."
TYPES
Patent Latent Plastic
Prints for Analysis From the Suspect
From the crime scene

4. DEVELOPMENT METHODS
● Development is generally done for Latent ear prints.
A) Powdering method :- The powder substance, when applied to the print, it adheres to
the secretions left on the object bearing latent ear prints.
● Black powder White or light coloured surfaces
● Grey powder Dark coloured surfaces
● Fluorescent powder Multi-coloured surfaces.

5. B) Iodine Fuming method :
-
● When vapours of iodine are sprayed
onto the surface, a temporary yellow-
brown colour is developed.
● Prints developed by this method are
not permanent in nature
C) Ninhydrin Method :-
● The amino acids that are present in the
sweat reacts with the Ninhydrin and form
a purple colour compound.
● As it was discovered by Ruheman so it is
well known as Ruheman’s purple.

6. D) Cyanoacrylate Method :-
- It form White colour prints.
- The surface where the ear print is
suspected to be present is placed inside
a chamber and superglue is heated until
it becomes a vapour.
- The vapours adhere to the oils and
sweat on the ear print, making it visible.
E) Casting method: - - The casting material is applied to the surface where the ear print
is suspected to be present.
- The material is then allowed to harden and is removed from the
surface, taking the impression of the ear print with it.

7. LIFTING METHODS
1. Transparent adhesive lifters: 2. Electrostatic dust print lifters :
-
3. Silicone-based gelatin lifters: 4. Latex or rubber lifters:

8. REFERENCES
1. https://forensicfield.blog/ear-print/
2. https://en.wikipedia.org/wiki/Ear_print_analysis
3. https://www.researchgate.net/publication/225361218_Earprints_in
_Forensic_Investigations
4. https://www.encyclopedia.com/science/encyclopedias-almanacs-
transcripts-and-maps/ear-print-analysis
5. https://idoc.pub/documents/ear-print-ppt-k6nqw1681pnw
6. https://www.scribd.com/doc/126836322/Ear-Print-Ppt#
7. https://www.slideshare.net/TejasviBhatia/latent-fingerprint-
development