Originally Posted by tmiw

There are still a whole lot of places that don't support EMV at all: most McDonald's locations, Peet's, Panera, the list goes on and on. MSD support would have been nice to have for those places and would not have been much more of a security risk. If they really wanted to, they could have assigned a separate PAN to the contactless interface and set things up to auto-decline non-contactless transactions using it.

The puzzling thing is the QR code stuff that Chase Pay uses. As I mentioned in the other thread, the data in the generated code looks an awful lot like what EMV contactless transmits, including a tokenized DAN. Are the requirements for EMV contactless that much of a pain to implement such that having the POS read a QR code is the path of least resistance?