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In the wild western movies which I think also show history where card tables are inside the salon or a whorehouse, people have to surrender thier weapons before going inside. That's kind of a KYC.
Lol, watching too much movie eh..

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Most of the created movies is part of the writers imagination there maybe some truth to it but most them are fiction.Unfortunately, this is especially true with regards to gambling. I love movies and I watch a lot of them, and I can say that in the past 15 years or so, movies have been great in showing and explaining some scientific and historical facts, but never in my entire life I saw a film where gambling experience was depicted realistically. It is always only partly true, and this part is normally very small.