Archive 2021— Comments Posted since January 2021 on Digital Identity and Threats to It

Now that we are getting ever more cyber-dependent, it is obvious that all the citizens must be able to enjoy a yet more solid digital identity. For making some contributions to the global endeavour, I am posting my observations on the related topics from time to time. Here is the archive of my short comments posted recently on LinkedIn.

The issues I take up are mostly

1. benefits of making use of our own episodic memory as secret credentials and seeds of cryptographic keys

2. catastrophic damages caused by removing secret credentials from digital identity on security and democracy

3. negative security effects of biometrics misused in cyber space


Who Benefits? (from passwordless login)

Why Are Passwords Bad?


No Password, No Phishing

Pictorial Presentation of Phishing Detection by Episodic Image Memory

What to See when Digital Identity Misinformation is Gone?

2-Factor Authentication vs Phishing

Threat to Epistemic Security in Digital Identity

Problem Solving

In case the email is NOT flagged for phishing

Episodic Memory and Its Impact on Digital Identity

Phishing Attack and Our Episodic Memory

Sequel — Detection of Fake Log-In Page

Detection of Fake Log-In Page

Who doesn’t want to have the convenience?

Ignored Gravity of Secret Credentials

Digital Identity — Sorting Out Misguided Perceptions about Authenticators

Digital Wallet — What to Protect against What?


Follow-Up: Loss of Digital Wallet

Loss of Cryptocurrency’s Digital Wallet

Democracy and ‘Identity Assurance by Our Own Volition and Memory’

Inconvenience behind Convenience of Biometrics

Aiming to Destroy Democracy?

Employees’ Silly Passwords as Big Risk to Employers

Do what you can’t do and you will be safe

Comments Posted in 2020 are available here.

Key References

“Impact of Episodic Memory on DigitalIdentity”

Digital Identity for Global Citizens

What We Know for Certain about Authentication Factors

Summary and Brief History — Expanded Password System

Proposition on How to Build Sustainable Digital Identity Platform

Additional References

External Body Features Viewed as ‘What We Are’

History, Current Status and Future Scenarios of Expanded Password System

Availability-First Approach

Update: Questions and Answers — Expanded Password System and Related Issues (30/June/2020)

< 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

< Media Articles Published in 2020 >

Digital Identity — Anything Used Correctly Is Useful

‘Easy-to-Remember’ is one thing ‘Hard-to-Forget’ is another

Identity Assurance And Teleworking In Pandemic



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Hitoshi Kokumai

Hitoshi Kokumai

Advocate of ‘Identity Assurance by Our Own Volition and Memory’, Inventor of Expanded Password System and Founder of Mnemonic Identity Solutions Limited in UK.