Assessing impact of using facial recognition technology

In a previous video I talked about the importance of assessing the impact of technology before adopting it. Today I want to talk to you about the impact of increased use of facial recognition technology. You may have already heard about the use of facial recognition technology to detect the mix of male and female customers at bars. Facial recognition technology is also used to identify people on the street or in a crowd.

Facial recognition is what is known as biometrics, which is identification of people from some features of their body such as fingerprint, iris pattern, or facial characteristics. No matter what biometrics we pick, if you stop and think about it for a moment, you would realize that your fingerprint or facial image does not come with your name stamped on it. Rather, somewhere in a computer system your facial image and your name are linked together. That linkage between your name and your facial image must be correct to begin with and the information must be stored securely.

Additionally, facial recognition systems are not error-free and there is a potential for misidentification.

So, as much as facial recognition is useful, it is not error-free. Therefore, you need some protection when the facial recognition technology misidentifies you as someone else. You need some way of correcting the mistake.

There is also the potential of someone trying to fool a facial recognition system by presenting, for example, a photograph or a video of you as your face. Something has to be done to detect such misuse and not accept a photograph as substitute for a face. It’s not easy to overcome this problem because facial recognition system identifies people from photographs or videos.

This means that if you are using facial recognition technology to identify customers or perhaps suspected criminals, you have to make sure that appropriate security precautions are in place to protect the linkage between a person’s facial image and their identity information and that the information is correct in the first place. You must also provide some sort of recourse when someone is misidentified.

Here's some more information to help you...

You may find my previous videos on technology impact assessment and biometric technology helpful:


NBTMV - On the need to assess impact of technology...

NBTMV on using biometric technologies to identify ...

NBTMV on using biometric technologies to identify people

Biometric technologies use specific features of your body such as fingerprint, facial image, iris pattern, or even the geometry of your hand, to identify you.  Assessing the impact of using biometrics depend on the exact type of use. If your laptop has a fingerprint reader where you swipe your finger to log in, then all we may need to worry about is the possibility that the system somehow could not match your fingerprint with what was previously stored in the system, in which case, there should be some alternate method for logging into the laptop.

On the other hand, if biometric technology such as facial recognition is used to identify a person from among millions in a database, then we have to think about many more things.

For  starters, you know that your fingerprint or facial image or iris pattern do not come with your name stamped on the it, which means that some computer system has to store your identifying information with your biometric features.  That association must be correct when it’s initially stored (meaning that your biometrics are linked to your identifying information) and the information must be securely stored and maintained.

Next, we have to consider the potential of errors in the system that compares and matches your biometric features such as your fingerprint or your facial image with information stored in a database. There is a possibility of misidentification where someone else’s biometric may be identified as yours or vice versa. This means that we need to provide some redress mechanism for anyone who is misidentified. This is especially important if the biometric is being used to look for a criminal, for example, and you are mistakenly tagged as that criminal.

Another potential problem is when someone intentionally tries to fool the system by presenting, for example, a photograph of you as that your facial image.

These are among some of the issues that we need to consider when assessing the impact of using biometric technologies to identify people.

Here's some more information to help you...

In 2002 GAO had published the following report that assesses use of biometric technologies for improving border security:

GAO-03-174, Nov 15, 2002

There are a number of books on biometric technologies as well: