Originally Posted by
tmiw
I imagine they won't ask for authorization amount here (and just assume $75 like they do now), but I could be wrong. Somehow I get the feeling that they'll still ask for ZIP code too, but at least they can detect the card's country code and suppress that prompt for non-US cards.
For a PIN transaction they have to ask how much you are authorising as by entering your PIN you authorising only that amount to be charged (or less). So if US terminals support a PIN transaction then I think they would ask for it.