Sunday, January 25, 2009

- Some Types of prints.

- Really there are many types of prints which help

in identification of individuals allover the world,

especially in the field of forensic medicine and crimes.

- We will take a quick review about some of them:

1- Fingerprints..from here.

2-DNA fingerprinting...from here.

3-Foot prints:

- are the impressions or images left behind by a

person walking made by sole of the foot and

skin pattern of toes and heel.

- WE can collect important information from them

that helps tell about the person that left them behind.

-Information concerning the approximate height of the

person and possibly the walking habits of the person

are two pieces of information that can prove useful

in a criminal investigation.

4-palm prints.

5-Iris print (recognition):

-Are used to screen individuals who are trying to gain

access to more highly secure places or accounts,

not to scan the general public at random.

-By using camera technology, with subtle infrared

illumination reducing specular reflection from

the convex cornea, to create images of the detail-rich,

intricate structures of the iris. Converted into

digital templates, these images provide

mathematical representations of the iris that yield

unambiguous positive identification of an individual.

6-Retinal print:the same idea of iris.

6-Voice print:

-The fact that voice follows a particular pattern,

whatever the language spoken.

- The FBI is trying to develop a system that

could make your voice as unique and recognizable

as your fingerprint called FASR system.

7-Ear print:

Burglars often listen at windows and doors,

leaving an earprint behind, which, just like

a finger print, can be used to trace them.

Ears are unique in size, shape and structure.

Scientists use these traits to develop biometric

scans of the ear. In ear scans, a camera creates

an image of the ear that is analyzed for

identifying characteristics.

8-Thermal footprint:

our bodies emit thermal energy which by special systems

can recognize the persons after their presence

in some places e.g scene if the crimes.

9- Air sinus print:

Pattern of skull's frontal air sinuses ,Outline is

unique and comparisons with antemortem X-rays are useful.

10-Lip print:-

lip print identification is generally acceptable

within the forensic science as a means of positive

identification because it appears in the scene of the crime.

see you, Dr Ibrahim


  1. Nice topic Dr Ibrahim :)

    جزاك الله خيراا


Nice to see your comment here........