Hitoshi Kokumai

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

Contact the author

Like Share Comment
Hitoshi blog
Reality that so many security experts opt to not speak

Reality that so many security experts opt to not speak

pad a&&
="B& EE

“Touch ID and Face ID: Real biometrics or not?” https://www.biometricupdate.com/202107/touch-id-and-face-id-real-biometrics-or-not

Reading reports like the above, probably not a few people would react quickly and critically, mentioning the absence of cancellability of our body features and the privacy concerns it causes.

Few people, however, speak about the fact that the overall security is brought down to the level lower than that of a default password/PIN where the biometrics is used with a default password/PIN in a ‘two-entrance’ deployment (as against ‘two-layer’ deployment). 

This security-lowering effect is the inevitable consequence of biometrics being probabilistic, as against deterministic; body features of living animals are unpredictably variable in ever changing environment.

Here is the reality that so many security experts opt to not speak - a two-layer deployment of two authenticators decreases the attack surface, whereas a two-entrance deployment  increases the attack surface, thus providing a better convenience to bad guys as closely examined here - https://www.linkedin.com/pulse/negative-security-effect-biometrics-deployed-hitoshi-kokumai/

Secret Credenti



Episodic Memory

Key References 

 “What we need to do for NOT achieving Solid Digital Identity”

Removal of Passwords and Its Security Effect 

Negative Security Effect of Biometrics Deployed in Cyberspace

External Body Features Viewed as ‘What We Are’

Ais made of



It's a no

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 



 < 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 · 2 min. reading time

“Expanded Password System is no bad, but we do not need it. · We can rely on password managers that ...

1 year ago · 2 min. reading time

We’ve come up with a slide presentation for “Bring a healthy second life to your legacy password sys ...

1 year ago · 2 min. reading time

Our password headache may well be the consequence of these dual causes - · ‘Use of Impracticable Pas ...

You may be interested in these jobs

  • Biffa

    Business Development Manager

    Found in: Talent UK - 6 days ago

    Biffa Sheffield fulltime

    Description · Changing the way people think about waste. · At Biffa, we love working with waste. Whether we're turning it into sustainable power, finding new ways to recycle it or simply keeping it off the streets, we believe every day is an opportunity to improve the lives of ...

  • Cream Healthcare

    Support Worker

    Found in: beBee S2 UK - 1 day ago

    Cream Healthcare Telford TEMPORARY

    As a leading healthcare agency we are looking for an experienced Adult Support Worker to join our team.You pick the days and shifts you wish to work and these can be changed weekly to fit around your other commitments - giving you a great live/work balaance. You will be working i ...

  • Lawson Clark Recruitment

    Recruitment Assistant

    Found in: Ziprecruiter GB Test30 - 11 hours ago

    Lawson Clark Recruitment London

    Job Description · RECRUITMENT ASSISTANT £37,000 · A CHANCE TO GET INVOLVED IN ALL ASPECTS OF THE RECRUITMENT PROCESS. · This is one of the City's most impressive international law firms, based in luxury City headquarters, and very highly regarded for their career development acti ...