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Wednesday, September 21, 2022
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5 DIFFERENCES BETWEEN IRIS RECOGNITION AND RETINA SCANNING TECHNOLOGY

January 1, 2018May 31, 2018 Mehedi 0 Comments biometrics, difference, iris,
retina

Iris recognition and retina scanning are very popular biometric modalities and
have some features in common. They both are ocular-based technologies, meaning
they rely on unique physiological characteristics of the eye to recognize
individuals. They both provide contactless image capturing facilities unlike the
more widely popular biometric technology of fingerprints. Undoubtedly, there are
many similarities between iris scan and retina scan, but still they are highly
different biometric modalities because of some specific reasons based on the
circumstances and motive of deployment.

Iris vs retina Source

Some of us may often consider iris and retina as not just similar, but the same
term. In reality, these two are different entities with different
characteristics. Here we will discuss some of the key differences between iris
scan vs retina scan.


DIFFERENCES BETWEEN IRIS SCAN VS RETINA SCAN


DISEASE:

It is certainly undeniable that human retina is unique to every person and they
usually don’t change during an individual’s lifetime. However, there is a tiny
chance that the retina could be affected by diseases including diabetes,
glaucoma or retinal degenerative disorders which may cause it to change. On the
other hand, iris scan cannot be affected by any kind of disease. It remains
stable during a lifetime without any hint of change.


DISTANCE:

Retinal scanning requires close distance between a person and the retina
scanner. It can’t work without close distance between the eye and the camera,
which  may prove to be inconvenient for biometric verification. Unlike retina
scan, iris scan doesn’t require such close distance for scanning. It can be
conducted like a normal photograph, where the normal distance is enough for
accurate scanning.


COMPLEXITY:

Retina biometrics are relatively complex and unaccepted in many circumstances.
Iris scanning is easy to use and has far less complexity issues compared to
retina scanning.


ACCEPTANCE:

For some technical issues and complex processing systems, retina recognition
isn’t widely accepted for all kinds of commercial purposes. Because of its easy
and convenient processing, iris biometrics is highly accepted for almost all
kinds of commercial purposes.


INVASIVE:

Though retina scanner is contactless, it beams a visible light into the eye
which is considered to be invasive. As like the retina scanner, iris scanner is
also contactless and it is like taking a normal photograph regarding any beaming
light issue which is not invasive at all.

Don’t Miss: 25 Advantages And Disadvantages Of Iris Recognition


SIMILARITIES BETWEEN IRIS AND RETINA

These two modalities have some similarities in common. The notable similarities
are:

 * False Positive: Rare incidents of false positive results
 * False Negative: Almost 0% false negative results
 * Reliability: They are reliable modalities as iris and retina are both unique
   for each person
 * Fast: They both can perform fast to identify a person


WHAT IS IRIS RECOGNITION?

The word iris comes from the Greek goddess of the rainbow, because of the many
colors of the iris. It is a thin part of an eye. It is situated around the pupil
which is at the center of the eye, thus they both are round in shape.

It controls the diameter and the actual size of the pupil, moreover the amount
of light reaching the retina. Eyes can vary from person to person but the iris
is responsible for the eye color. Iris has two layers, the front part is known
as stroma and the opposite part is called pigmented epithelial cells.



Iris Recognition is an innovative biometric identification method to
authenticate a person by his/her iris patterns. The whole process is an
automated method where a biometric recognition technique applies video images of
an individual’s eyes.

Iris recognition has been applied on many important international projects in
USA, Canada, UK, Netherlands, UAE, Jordan, India, Pakistan, Thailand, Kenya,
etc. Microsoft recently launched Lumia phones with iris recognition solution as
an authentication feature.


WHAT IS RETINA SCANNING?

Human retina is a thin tissue consisting of neural cells which are situated in
the posterior portion of the eye. It is the third and inner coat of the eye,
which is a light and highly sensitive layer of tissue. The optics create an
image of the visual world on the retina through two other key parts, the cornea
and the lens. Today’s cameras function by following this pattern.

The capillaries supply blood to the retina which is highly complex in structure
and are responsible for the unique retina for every person in this planet, even
for identical twins.



Generally, retina remains unchanged during its lifetime, but in some cases, as
discovered by research, retina pattern may become distorted when affected by
diseases such as diabetes, glaucoma or other retinal degenerative disorders.

Retina scan is a biometric method to authentic a person by using the patterns on
a person’s retina blood vessels. Similar to iris recognition, it is also an
ocular-based technology. The purpose of using retina scans are mainly for
authentication and identification. Many government agencies including FBI, NASA,
CIA, etc. have been using retina recognition for authentication and
identification purposes. This biometric technology is also very useful for
medical purposes.


CONCLUSION

As discussed above, iris recognition and retinal scanning both have several
characteristics in common. On the other hand, several technical details,
complexity, acceptance and convenience differentiates iris and retina
recognition. It would be highly appreciated if you let us know of your opinions
about iris vs retina recognition in the comments box.

 * ← Future of Biometrics: 5 Technologies to Watch in 2018
 * 10 Advantages and Disadvantages of Biometrics System You Should Know →

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