What is Facial Recognition system and how it works? | Raveling Tech

Facial recognition

Facial recognition is the technology every smartphone company is including in there for which provides one step more security to your device. It feels so easy and interesting that you can unlock your smartphone even without touching the screen. But do you know this technology actually works and how is so accurate and get wrong even if you change your facial expression. 

Today in this post we are going to introduce you to this technology, how it works and about other sectors in which facial recognition can be useful and at last we will discuss some negative effects this technology can cause. 

What is Facial Recognition?

Facial recognition is a technology that maps people’s faces mathematically and stores the data so that computers can use it to identify them. You’ve almost certainly come across it, perhaps to log into your phone or speed you through passport control. Perhaps because of its ubiquity, the technology is proving controversial, not least because it affects our right to privacy.

How does Facial Recognition work?

In general, these systems detect and record your distinguishing facial features. Older methods make up to 80 measurements of attributes such as the distance between your eyes and the width of your nose.

How Facial Recognition Work

More advanced 3D-mapping techniques scan your face using light to measure its curves, then calculate the depth and angles of your face down to a millimeter scale. Once this information is stored in a database, computers can use it to make matches either by scanning the person’s face or using an image or video. Of the two methods, scanning the face is preferable to using a 2D photo because the captured face doesn’t have to be staring directly at the camera.

What are the benefits and use does facial recognition have?

Facial recognition can help the police solve crimes by comparing suspects caught on camera with images from a central database. Likewise, it could be used to identify terrorists or spot a missing person. Less important uses include logging into services, verifying payments in shops and even organizing your photos according to the people in them. There is a sinister side to the technology, however.

Many other places were facial recognition can be useful.
  • In colleges and classroom to take attendance of student so you don’t think about bunking the classes.
  • Social media sites like Facebook use facial recognition to tag people in your photos with your permission. Facebook can recognize faces with 98 percent accuracy.
  • Facial recognition can be used at business entrances and restricted areas for security purposes.
  • Airlines departure gates can use this system for verifying your boarding pass at the gate to board your flight.


Is facial recognition is secure or not?

There’s a chance you could be misidentified, questioned by police or worse, although forces such as South Wales Police say they are building checks and balances into their methodology. However, when Amazon’s facial-recognition system, Rekognition was tasked with matching photos of all 535 members of Congress against a database of 25,000 publicly available images of criminals, a surprising 28 Congress members were listed as matches. To make matters worse, a disproportionate number of those misidentified were people of color, alarming the American Civil Liberties Union of Northern California, which carried out the study.

  • If the system goes in wrong hand then one can use your picture to get the details about you and come to know who you are.
  • As facial recognition is still not 100 percent accurate and in many cases happens that the system has given the wrong detail.
  • Government agencies and other companies who can use this system-become able to track you and your privacy gets violated.

At last, facial recognition is a great system and can be used for many good purpose but all depend on that where all the data is going to be stored and who is allowed to access them.

Post a Comment

Previous Post Next Post