Originally Posted by
sbiddle
It's interesting to know there are some workarounds.
For security reasons these machines all do a lookup of the zip code of the billing address of the card and if they don't match, it won't work. Since credit card skimming is so prolific in the US it was one a good way of minimising it.
I'd tried random ZIP codes on my NZ card and my OneSmart card and none have ever worked.
Well, in my experience they either don't check or it doesn't work for Danish cards, and everything is processed seamlessly anyway.
I drove more than 6K miles in the US last summer, so bought quite a bit of gas, with only one place unable to run my card at the pump using a real VA zip code unassociated with my card (but that place could not handle my card inside either).
YMMV
DanishFlyer