Originally Posted by
cbn42
Looking at this in the context of EMV, does anyone know if the EMV could "remember" where you tagged onto the system, so that when you tag out it knows how much to charge? If there is a flat charge then using EMV at the point of entry (and eliminating the proprietary transit cards altogether) would be feasible, but can it be done with distance-based pricing?
It is feasible. There's nothing in the EMV standard that would allow the card to keep track of this though. So from a systems integration point of view, the transportation system's systems would have to keep track of where you tapped in and where you tapped out. And in order to do that, all the "tap terminals" would have to be online. That would be a major undertaking since most systems, like the bay area's clipper card work as stored value cards with offline authentication. Though these offline systems could be integrated easily with existing NFC smartphones (though only with android smartphones on android 4.4).