The fingerprints are unique markers that have been used as personal signatures for many centuries. Back in 300 B.C. in China the letters were sealed with clay and impressed with the fingerprint of the author.

In the late 1800s, Henry Faulds, a medical scientist and missionary, published a research about the uniqueness of these ridges and their potential for individualization.

Things that Make you Unique

Things that Make you Unique

Around this time, the fingerprints became factors for identification in the criminal cases. Sir Francis Galton calculated that the possibility of an existence of two matching fingerprints is around one in 64 billion.

Considering the fact that the current human population of the world is 7.2 billion people, your fingerprint is uniquely yours.

While the fingerprints are certainly distinctive in each person, there are some other features that make you one in 7.2 billion. Here are three things that make you unique.

The Tongue

Since the 1970s, the teeth of a person and their bite marks have been analyzed in courts. However, the most distinctive part of the mouth is the tongue.

While the fingerprints can slightly change over time, the tongue always remains the same because it is protected inside the mouth.

The journal Advances in Biometrics published a report claiming that the tongue is a useful tool for identification because its shape and surface textures are unique to each person.

Apart from being the only internal organ that can easily be exposed for inspection, the researchers claim that its shape and physiological textures cannot change even when the coating of the tongue changes.

Although it has never been proven that the tongue of each individual is unique, various studies suggest that because of these characteristics and the inability to forge a print, the tongue is a viable option for a suspect’s identification.

The Ears

The Ears of every person have distinctive curves and ridges. The most prominent unique feature is the helix, the rim of the ear.

According to a research from the University of Southampton, the pattern of the ridges of our ears remains the same as we age, unlike our fingerprints which become word down and scarred.

The researchers developed an algorithm, named “image ray transform”, which can identify an individual out of 252 people with 99.6% accuracy.

The software created a clear image of the ears of each participant by analyzing how the light reflected off the curved features of the ears.

Even though the software has certain limitations which can change the shape of the ear, such as a probability of inefficient lighting or a person wearing jewelry, the researchers claim that it should be used supplementary to the fingerprints for a person’s identification.

The Iris

The iris is a flat membrane behind the cornea of the eye, which gives color to your eyes and controls the size of the pupil.

Iris scanning is a useful tool for protecting secure information. The Federal Bureau of Investigation’s website says that unlike the structure and the coloration of the iris, details of the patterns are not genetically linked.

In the womb, the iris grows from tightly folded tissue membranes, and just before birth, it degenerates in order to expose the pupil. When this happens, there is a formation of the unique structural pattern of the iris.