Absolutely, my point was that this system is essentially everywhere, in one way or another, there is no need to say "US", since it's not USA specific system.
I am in the US, so I was speifically listing the US because that is what I am familiar with and did not want to make assumptions about other regions. Appologies if you took offense to that in any way.
My ambiguous usage of "we" to refer to my particular country of the United States was misleading. I'm glad these things exist around the world and I hope we in the US can implement one someday.
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