Originally Posted by
alexmt
If Coin managed that, banks would simply push an update to the chip cards and break whatever hack they used. It'd have to be done with bank cooperation.
It wouldn't be a hack per se if they went the GW route. Get a notification from whatever bank they partnered with, charge the selected card for the amount just like if the card was used for a card not present transaction. Of course, they would need a merchant account that is okay with that, probably from the same bank that's putting the chip in.