I am wondernig what is the reason, if any, that in the national identification cards the names (first and last) are written in ALL CAPS?

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  • The reason is, it's the law. The explanation is, majuscule is "basic", minuscule is a fancy add-on. Interpretation errors are reduced when majuscule is used, esp. in handwriting contexts. – user6726 May 11 at 20:00
  • @user6726 is it the law though? I don't see anything about this in the laws of New York, for example. – phoog May 11 at 20:18
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    I think this is a question about standards rather than the law. I don't think there is a law (not in the UK, anyway) that says "names in passports must be in capital letters". – Lag May 12 at 13:28
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    I’m voting to close this question because this is extremely diverse globally and not about the law: While there are international treaties about how an international ID, passport or drivers license has to look, to some degree, the actual look is defined in national regulations. There's not even a law about the look usually! – Trish Jun 10 at 23:12
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    @Trish International treaties aren't law?! Man, I wish I had known that before I took those classes in law school. Also, like half the legal work I do daily is governed by international treaties. Yes, International Treaties are appropriate for Law.SE. – Andrew Jun 22 at 16:19

Some jurisdictions do that. Others don't (see, for example, the Dutch national identity card).

My New York driver's license is in all caps, and I rather suspect that it's a holdover from the days in which licenses were processed using a computer system that had only upper-case characters.

But that's just a guess. The real answer is that the premise of the question is incorrect.

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In the national identification cards the names (first and last) are written in ALL CAPS

That's incorrect, another example is Thai identity cards, which don't use all caps.

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The League of Nations Passport Conference of 1926 contained suggestions on how christan and surnames should be written:

Various Entries..
The question of the entries to be made on the passport form has given rise to the following observations:

  1. Sufficient space should be provided for the full name of the holder;
  2. Christian names and surnames should be written either in block capitals or in what is known as English roundhand;
  3. The surname should be underlined.

It is agreed that christian names need not be translated.

United States Passports that I have seen, never underlined the surnames. Other countries often did. Sometimes spaces between the letters of the surname were used instead of underlining.

With the introduction of typewritten passports, in the United States since 1931-01-02, all entries were mostly uppercase.

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Note: The typed letters are red. A passport issued in September 1931 (and later) are black.

A 1934 passport of Moritz Feibusch, which was retrieved from the ruins of the Hindenburg, can be seen here:


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I found a few fringe sites that say the concept of a legal name is an identifier issued by the government, hence all capital letters. This explanation doesn't seem too believable to me but I could be wrong.

In my mind it's logical this is just to clearly show your identity. It seems to be more difficult to mix up capital letters than to mix up lowercase letters.

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    Regarding the first paragraph, I expect you've found some websites promoting sovereign citizen ideas, and you are absolutely not wrong to doubt them. – phoog May 11 at 20:10
  • Thanks, they were the typical Quora queries, conspiracy theory website, etc. Not to speak strongly but most assumptions were at the very least asinine. – Strakatastic May 11 at 20:20
  • I know I'm going to be docked for asking this but what was wrong with my answer? I responded to the matter at hand, was it because I didn't put a link to Quora? – Strakatastic May 12 at 1:05
  • I didn't down vote, but I suspect that it may have been the speculative nature of the second paragraph. – phoog May 12 at 2:14
  • Thanks, I appreciate the explanation. Wasn't trying to suggest you did it, sorry if I mistyped lol – Strakatastic May 12 at 23:41

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