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Prepare to be surprised then as optional IDs are pretty much only a thing western countries.

https://en.wikipedia.org/wiki/List_of_national_identity_card...

https://en.wikipedia.org/wiki/National_identity_cards_in_the...

Bad reference. Again Germany: it's colored red, but the table clearly states that you don't need to carry it.

Which is the statement you tried to counter with your link.

Yeah, you need to have it, but you don't need to carry it, nor show it to anyone (including the police - they're supposed to use other method of identification if you refuse).

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