General EMV/contactless question, I have a dual interface EMV plus contactless American Express. I tried to tap and pay at a Peet's Coffee shop and it didn't work. I tapped, the reader seemed to acknowledge the tap, but then did not process the transaction. The cashier had to swipe the card. My question is, to use dual emv plus contactless card does the store have to have EMV enabled (Peet's does not have EMV turned on)? I had this same experience about 2 weeks back at a different Peet's location so I don't believe it is a reader issue. Also, about 6 months ago I did use Peet's contactless reader to do a google wallet transaction so I know tap and pay works (or at least has in the past). Although I can't remember I believe I used this American Express card this to tap and pay years ago (back when it was just contactless and not EMV). Any ideas?