"Q. Will my Coin work outside the U.S.?
A. Not in all cases.
U.S.-based customers: Coin will work overseas, but we recommend that you bring a backup card when you travel.
Customers located outside of the U.S.: Coin does not support EMV yet. If the country you live it requires it we recommend holding off your purchase for now."
"Coin does not support EMV" is an interesting statement - I can't see how they could ever support EMV without explicit cooperation from every issuing bank, which they won't have.
I've got a few cards and travel somewhat regularly to Europe. I've specifically been asking various card vendors that I have for chip and pin/EMV based cards. For the most part, they seem to be rolling them out at the high end rather than making them available at the normal "consumer"/reward cards.
U.S.-based customers: Coin will work overseas, but we recommend that you bring a backup card when you travel.
Customers located outside of the U.S.: Coin does not support EMV yet. If the country you live it requires it we recommend holding off your purchase for now."
Found this in FAQ section.