We have 3 different chip/sig cards and brought them to Quebec City and then to France to try them out. They worked fine in QC...stick the card in the portable CC reader and a receipt spits out for signature...kinda cool and the waiter never touched the card

We tried them in Paris and Toulouse and they did not work at all in gas station pumps, toll booths or train (RER and Metro) machines...PIN needed (not handy if driving to catch an early flight and need gas). They worked as usual (swiped) in manned locations with the card handed over to the human.

It never made sense to me why the USA didn't just go with most of the world to chip/PIN...much more secure...the sig part is useless.