All right. I was just curious because I live in a country (China) where cards that are considered less-common in the US are used almost everywhere (Discover, for example- in Shanghai it'd be near-impossible to find a place that *doesn't* take it, and JCB is accepted practically everywhere that is frequented by Japanese tourists).
Also, out of curiosity, how are combination cards handled? For example, I have a UnionPay/Visa (UnionPay is China's card network- Discover partners with them and that's why Discover gets accepted in places that other cards don't) card that doesn't start with 4. Is that because it's a UnionPay card first? (Maybe such a thing doesn't exist in the US- it does in China because there used to be a time when Discover didn't partner with UnionPay so those cards didn't work outside China and combination cards had to be issued so they could work internationally)
Also, out of curiosity, how are combination cards handled? For example, I have a UnionPay/Visa (UnionPay is China's card network- Discover partners with them and that's why Discover gets accepted in places that other cards don't) card that doesn't start with 4. Is that because it's a UnionPay card first? (Maybe such a thing doesn't exist in the US- it does in China because there used to be a time when Discover didn't partner with UnionPay so those cards didn't work outside China and combination cards had to be issued so they could work internationally)
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