From my understanding of the EMV payment specification (http://en.wikipedia.org/wiki/EMV) a card can actually have multiple applications and when used at a compliant terminal, you are prompted to select the payment application. In other words, a EMV compliant terminal should prompt you to select which card you want the charge to go to. Of course this isn't a terminal behavior you typically see because pretty much any card you get issued by the bank will only have the one payment app. In my own testing though, I've come across cards with more than one.
The US has been extremely slow to adopt this technology despite, the adoption rates around the world. Visa and MasterCard have set a date of 2015 to push merchants to have their checkout terminals be EMV compliant or face higher fraud liability charges.
Comments
From my understanding of the EMV payment specification (http://en.wikipedia.org/wiki/EMV) a card can actually have multiple applications and when used at a compliant terminal, you are prompted to select the payment application. In other words, a EMV compliant terminal should prompt you to select which card you want the charge to go to. Of course this isn't a terminal behavior you typically see because pretty much any card you get issued by the bank will only have the one payment app. In my own testing though, I've come across cards with more than one.
Maybe you're from Europe because I think you're talking about stuff that isn't even close to existing in the US.
The US has been extremely slow to adopt this technology despite, the adoption rates around the world. Visa and MasterCard have set a date of 2015 to push merchants to have their checkout terminals be EMV compliant or face higher fraud liability charges.