Hitoshi Kokumai

1 year ago · 2 min. reading time · ~10 ·

Contact the author

Like Share Comment
Hitoshi blog
Questions Raised over Privacy, Racial Bias, and Accuracy

Questions Raised over Privacy, Racial Bias, and Accuracy



Today's topic is BBC's “Facebook to end use of facial recognition software”  https://www.bbc.com/news/business-59143323

It is good to see BBC now mention ‘accuracy’ in the report besides other concerns, but not good enough as yet; they still do not refer to the probabilistic nature of biometrics that inevitably brings the trade-off between false acceptance (false positive/match) and false rejection (false negative/non-match) 

Once they start to look at this trad-off issue, they could quickly notice that biometrics is dependent on a default password/pincode deployed in a security-lowering ‘two-entrance’ formation (as against security-enhancing ‘two-layer’ formation).

Then, they would soon be awake to the security-destructive effect of biometrics as summarised in these posts – 

“Step-by-Step Analysis of Why and How Biometrics Brings Down Security”

“Biometrics is to Password what Back door is to Front door”

If there is nothing particularly wrong in using two authenticators in a ‘two-entrance’ deployment for convenience’s sake, it is absolutely wrong and unethical to spread the false sense of security by misleading the citizens to believe that the security has been improved by biometrics.


FRR (False Rejection Rages)<br /> <br />  <br /> <br /> False Acceptance Rates and False Rejection Rates<br /> <br />  <br /> <br /> 10<br /> <br /> 10%<br /> <br /> 10°<br /> <br />     <br />     <br /> <br /> 38 (Equa ror Rates)<br /> <br /> procucts<br /> (more accurate)<br /> <br />   <br /> <br />  <br />  <br /> <br /> 00 100 ar 100 10<br /> FAR (Fale Accegtarce Rates)Worry about a backdoor? - FRR (False Rejection Rages)


False Acceptance Rates and False Rejection Rates






38 (Equa ror Rates)

(more accurate)



00 100 ar 100 10
FAR (Fale Accegtarce Rates) - FRR (False Rejection Rages)


False Acceptance Rates and False Rejection Rates






38 (Equa ror Rates)

(more accurate)



00 100 ar 100 10
FAR (Fale Accegtarce Rates)

Key References 

Biometrics is to Password what Back door is to Front door

Removal of Passwords and Its Security Effect 

Negative Security Effect of Biometrics Deployed in Cyberspace

External Body Features Viewed as ‘What We Are’

Secret Credenti



Episodic Memory - Worry about a backdoor? - Worry about a backdoor?

Additional References

For Achieving Solid Digital Identity on Information Security Buzz (Mar/2021)

What We Know for Certain about Authentication Factors

Digital Identity for Global Citizens
 Image-to-Code Conversion by Expanded Password System

Summary and Brief History - Expanded Password System

Proposition on How to Build Sustainable Digital Identity Platform

Account Recovery with Expanded Password System 

 History, Current Status and Future Scenarios of Expanded Password System 

Availability-First Approach 

Update: Questions and Answers - Expanded Password System and Related Issues 

pad a&&
="B& EE - pad a&&
="B& EE

 < Videos on YouTube>

Slide: Outline of Expanded Password System (3minutes 2seconds)

Digital Identity for Global Citizens (10minutes - narrated)

Demo: Simplified Operation on Smartphone for consumers (1m41s)

Demo: High-Security Operation on PC for managers (4m28s)

Demo: Simple capture and registration of pictures by users (1m26s)

Slide: Biometrics in Cyber Space - "below-one" factor authentication

Like Share Comment

Articles from Hitoshi Kokumai

View blog
1 year ago · 3 min. reading time

Today's topic is “Microsoft Exchange Autodiscover protocol found leaking hundreds of thousands of cr ...

1 year ago · 2 min. reading time

We today take up this report “NSA: We 'don't know when or even if' a quantum computer will ever be a ...

1 year ago · 2 min. reading time

I would like to take up this somewhat puzzling report - “Google advises passwords are good, spear ph ...

Related professionals

You may be interested in these jobs

  • Understanding Recruitment

    Big Data Java Developer

    Found in: beBee S2 UK - 3 days ago

    Understanding Recruitment London Full time

    Big Data Java Developer · Hybrid (2 days per week into the London office) · Upto £130,000 + Bonus/Benefits · We are currently working with a global fin-tech brand specialising in cloud-based analytics, Archiving and messaging software's for some of the largest banks/trading organ ...

  • Senitor Associates Limited

    Backend Magento Developer

    Found in: Ziprecruiter GB Test30 - 2 days ago

    Senitor Associates Limited Edinburgh

    Job Description · Magento Developer - Edinburgh - Magento - 100% Remote working · My client, a leading ecommerce agency located in Edinburgh, is looking for a Backend Magento Developer to join their ever growing web development team. · Having recently signed on a number of new e ...

  • Microsoft Corporation

    Senior C++ CI/CD Engineer

    Found in: Jooble GB - 2 days ago

    Microsoft Corporation Reading, Berkshire

    From being able to log you in with face recognition, correct your gaze during a video chat to maintain eye contact, to the exciting possibilities in augmented reality, are you itching to play a part in bringing applications of computer vision to millions? The Microsoft Applied Sc ...