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I recently returned from a trip to the USA and was a bit surprised that they asked for ZIP code instead of PIN for my credit card. While the NY subway accepted

I recently returned from a trip to the USA and was a bit surprised that they asked for ZIP code instead of PIN for my credit card. While the NY subway accepted my non-US ZIP code, some gas stations did not as they apparently checked the entered ZIP code against valid US ZIP codes.

Kurtz79 8y ago
To my knowledge, in some machines non-US ZIP codes are accepted up to a cash limit (can't remember if it's daily or for transaction). Probably your bill at the gas stations was higher than the one for the subway tickets.