Some More Topics on Digital Identity #9

Hitoshi Kokumai
2 min readDec 23, 2022

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Surprisingly many people are promoting, selling and adopting biometrics as a tool of identity authentication without the basic knowledge of the very technology.

Get graphs to talk the nature of biometrics

- By nature, whether static or behavioural, all the biometrics technologies are ‘probabilistic’ since it measures unpredictably variable body features of living animals in ever changing environments.

- False Acceptance and False Rejection are not the variables that are independent from each other, but are dependent on each other.

- The lower a False Acceptance Rate is, the higher the corresponding False Rejection Rate is. The lower a False Rejection Rate, the higher the corresponding False Acceptance Rate.

- When a False Acceptance Rate is close to Zero, the corresponding False Rejection Rate is close to One (100%). When a False Rejection Rate is close to Zero, the corresponding False Acceptance Rate is close to One (100%).

- The presence of False Rejection, however close to Zero, would require a fallback means against the False Rejection unless the user can forget the availability.

Ref: “I support Biometrics as a Technology” https://www.linkedin.com/posts/hitoshikokumai_democracy-privacy-ethics-activity-6993771041974095872-2eOx

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As an appendix to the series of ‘Identity Assurance by Citizens’ Non-Volatile Autobiographic Memory #1 — #19’, I am discussing some more topics on digital identity. It may well tell much more about the very broad scope of our activity

*P34 of “Fend Off Cybercrime with Episodic Memory”

https://www.slideshare.net/HitoshiKokumai/slide-share-updated-fend-off-cybercrime-with-episodic-memory-29aug2022

Video: https://drive.google.com/file/d/1FEYKjBOEVXVEljRt2_nu1uSXvtUNN73Q/view

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Hitoshi Kokumai
Hitoshi Kokumai

Written by 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.

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