From the Apple demo, they show this 4 band wifi looking symbol as being compatible with Apple Pay, does that mean that any place that has it now already will work do do the retailers need to upgrade something on their end to work?
I saw the same symbol at CVS yesterday at the checkout but CVS wasn't on the list of initial retailers to accept Apple Pay, so I assume they do need something else for it to work?

I saw the same symbol at CVS yesterday at the checkout but CVS wasn't on the list of initial retailers to accept Apple Pay, so I assume they do need something else for it to work?
