New Breed of BCI/BMI Coming in Sight

Hitoshi Kokumai
3 min readJul 12, 2021

Expanded Password System that turns the torturous password login into history and brings us such desirable merits as enabling us

- to recognize and recall dozens of different secret credentials effortlessly

- to manage the correspondence between the accounts and the passwords

- re-generate cryptographic keys on-the-fly

- provide a solid defense against advanced persistent threats

also encourages us to look at the possibility of a new breed of BCI/BMI as discussed in “Password & Brain-Computer/Machine-Interface”

Assume that shown above as a simplified specimen are 10 objects, 3 of which are part of my episodic memory inscribed deep in my brain; for instance, my father was fond of them.

I think of the numbers (1), (4) and (8) strongly, all in the red color, (not the images themselves), expecting that the BCI/BMI system will correctly pick up these red-colored numbers. When successful, the system identifies these specific spectacle, booklet and pen as my secret credentials. Different numbers are randomly given to different images next time to thwart the replay by a bad guy with a stolen data.

Key References

Account Recovery with Expanded Password System

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

Additional References

Removal of Passwords and Its Security Effect
Negative Security Effect of Biometrics Deployed in Cyberspace

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

< 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



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.