tag: identifier

identity Security Your Privacy

Japan Post to consider introducing 7-digit alphanumeric address recognition for deliveries to Rakuten Group and other companies...

Nat 2025-05-26 No Comments

The top story in the Nikkei newspaper on May 5th was "Japan Post to consider introducing 26-digit alphanumeric address identification for deliveries to Rakuten Group and other companies", but experts have already started to comment on it. Professor Ichiro Sato of the National Institute of Informatics and editorial committee member Naoki Asakawa of Nikkei BP are both right. Of course, on the other hand...

Further display Japan Post to consider introducing 7-digit alphanumeric address recognition for deliveries to Rakuten Group and other companies...
identity OAuth OpenID Security Your Privacy Politics

What "number" design should be - In response to the pension number leak incident

Nat 2015-06-10 No Comments

In the pension number leak incident, it seems that "all leaked numbers will be changed." Personally, I feel like "Oh no." As I wrote in yesterday's article, if it is operated properly, the leak of the number itself is not a big risk, and since the address, name, and other information that was leaked along with it cannot be changed, there is little point in changing only the pension number...

Further display What "number" design should be - In response to the pension number leak incident
identity Your Privacy

Is it dangerous if the number is leaked?

Nat 2015-06-09 Comment

Well, how are you all doing as we approach the summer of the My Number bubble? It just so happens that pension numbers have been leaked in large numbers, and it's been said that this could have an impact on My Numbers, but in the first place, why would anyone make such a fuss about a "number" being leaked more than other personal information such as "address, name, date of birth"...

Further display Is it dangerous if the number is leaked?
Figure 2. Identifier risks
identity Your Privacy

My Number and Privacy: Identifiers and Excess Risk

Nat 2012-10-01 5 Comments

Last time, in "My Number and Privacy: Requirements for Identifiers," I wrote the following. Next, as a hypothetical example, let's consider a common number for taxes and social security (including pensions). This would need to meet the requirements of both the basic pension number and the taxpayer number. In other words, the "long period" required for pension management and the tax...

Further display My Number and Privacy: Identifiers and Excess Risk
Rabbit
identity Security Your Privacy Politics

My Number and Privacy: Requirements for Identifiers

Nat 2012-08-09 Comment

Recently, it seems that My Number has been getting more coverage in various media outlets [1]. Leaving aside the possibility that it may be too late, I think it's better than nothing. Ideally, I should point out any issues I have about each article, but unfortunately I'm very busy...

Further display My Number and Privacy: Requirements for Identifiers
Use code conversion to link different "numbers" as needed
identity Your Privacy Politics

Regarding storage and linking of the common number/My Number

Nat 2012-03-01 3 Comments

First, let's take a look at the following illustration from the Cabinet Secretariat regarding the My Number. The "number" is the My Number. In this illustration, the My Number ("number") is stored in multiple places, such as information holding agency A and information holding agency B. This is something that just doesn't feel right. Because this is not the kind of information sharing platform that we use.

Further display Regarding storage and linking of the common number/My Number
identity Your Privacy Politics

A heartless society and the number system: The dangers of name matching as seen in Victor Hugo's Les Misérables (2)

Nat 2011-01-01 No Comments

In the previous article, I discussed the possibility that the combination of the Internet and a universally used number (universal identifier) ​​system could result in a "everyone being Inspector Javert type," which could ultimately give rise to a "heartless society." In addition, this time I will discuss the combination of another characteristic of the Internet, "fragmentary information," and "universal identifiers."

Further display A heartless society and the number system: The dangers of name matching as seen in Victor Hugo's Les Misérables (2)
identity Your Privacy

A heartless society and the number system: The dangers of name matching as seen in Victor Hugo's "Les Misérables"

Nat 2010-12-13 4 Comments

Humans are forgetful creatures. This leads to forgiveness. People act on this premise. But the Internet does not forget. People who do not forget, like Inspector Javert in "Les Misérables," are called heartless, and the damage they cause is called heartless. The careless introduction and use of identifiers, such as "universal immutable numbers," on the Internet will turn anyone on the Internet into a Javert. And what emerges is a "heartless society."

Further display A heartless society and the number system: The dangers of name matching as seen in Victor Hugo's "Les Misérables"